記述言語：日本語   出版者・発行元：岡山県臨床細胞学会  

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掲載種別：研究論文（学術雑誌）   出版者・発行元：American Society of Hematology  

The distribution and clinical impact of cell-of-origin (COO) subtypes of diffuse large B-cell lymphoma (DLBCL) outside Western countries remain unknown. Recent literature also suggests that there is an additional COO subtype associated with the germinal center dark zone, that warrants wider validation to generalize clinical relevance. Here, we assembled a cohort of Japanese patients with untreated DLBCL and determined the refined COO subtypes, that include the dark zone signature (DZsig), using the NanoString DLBCL90 assay. To compare the distribution and clinical characteristics of the molecular subtypes, we used a dataset from the cohort of BC Cancer (BCC) (n = 804). Of the 1050 patients where DLBCL90 assay was successfully performed in our cohort, 35%, 45%, and 6% of patients were identified to be germinal center B-cell-like (GCB)-DLBCL, activated B-cell-like (ABC)-DLBCL, and DZsigpos-DLBCL, respectively, with the highest prevalence of ABC-DLBCL differing significantly from that of BCC (P < 0.001). GCB-DLBCL, ABC-DLBCL, and DZsigpos-DLBCL were associated with two-year overall survival rates of 88%, 75%, and 66%, respectively (P < 0.0001), with patients of the DZsigpos-DLBCL having the poorest prognosis. In contrast, GCB-DLBCL without DZsig showed excellent outcomes following rituximab-containing immunochemotherapy. DZsigpos-DLBCL was associated with the significant enrichment of tumors with CD10 expression, concurrent MYC/BCL2 expression, and depletion of microenvironmental components (all P < 0.05). These results provide evidence of the distinct distribution of clinically relevant molecular subtypes in Japanese DLBCL and that refined COO, as measured by the DLBCL90 assay, is a robust prognostic biomarker that is consistent across geographical areas.

DOI： 10.1182/bloodadvances.2023010402

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

Abstract

Poorly differentiated adenosquamous carcinoma (glassy cell carcinoma) of the cervix is extremely rare, accounting for 1–2% of all cervical cancers. Herein, we report a case with coexistent poorly differentiated adenosquamous carcinoma (glassy cell carcinoma), “usual-type” adenocarcinoma, and squamous cell carcinoma in situ of the cervix. A female patient in her 60 s was referred to our hospital and diagnosed with poorly differentiated adenosquamous carcinoma based on cervical cytology and biopsy. The tumor was classified as clinical stage IB1 cervical cancer following magnetic resonance imaging; radical hysterectomy was performed. Histopathological examination revealed poorly differentiated adenosquamous carcinoma (glassy cell carcinoma), usual-type adenocarcinoma, and squamous cell carcinoma in situ, all coexisting. All carcinoma regions showed identical sizes to high-risk human papillomavirus (HPV) in fragment analysis. The patient is currently alive, without evidence of recurrence, 31 months post surgery. In this case, three different carcinomas coexisted. Fragment analysis of the patient’s HPV status suggested that all carcinomas were related to an infection with the same high-risk HPV type. To determine the precise mechanism of tumor development, i.e., whether the tumors were of the mixed or collision type, further studies are needed, including clonal analysis for the loss of heterozygosity pattern.

DOI： 10.1007/s00795-023-00354-z

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その他リンク： https://link.springer.com/article/10.1007/s00795-023-00354-z/fulltext.html

記述言語：日本語   出版者・発行元：(一社)日本病理学会  

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記述言語：日本語   出版者・発行元：(一社)日本病理学会  

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記述言語：日本語   出版者・発行元：(一社)日本病理学会  

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記述言語：日本語   出版者・発行元：(一社)日本病理学会  

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記述言語：日本語   出版者・発行元：(公社)日本臨床細胞学会  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

BACKGROUND: Gastric IgG4-related disease (IgG4-RD) can mimic malignancy, submucosal tumors (SMT), and ulcers, leading to over-triage and unnecessary medical interventions such as gastrectomy. The variability in the clinicopathological presentation of IgG4-related disease is not yet well defined, posing a diagnostic challenge. METHODS: Following the PRISMA Extension for Scoping Reviews, we searched MEDLINE and EMBASE for all peer-reviewed articles using keywords including"gastritis," "stomach," "gastrointestinal stromal tumor," and "IgG4-RD" from their inception to December 28, 2021. RESULTS: 39 articles, including two observational studies and 42 cases, were included in the systematic review. While bottom-heavy lymphoplasmacytic mucosal infiltration is a characteristic finding of gastric IgG4-RD, it was only present in less than half of the patients in the observational studies. Patients with Gastric IgG4-RD were more likely to be diagnosed with gastrointestinal stromal tumor (GIST), gastric cancer, or peptic ulcer disease and their clinical course involved resection (51.3%) or even gastrectomy. Diagnosis of gastric IgG4-RD was most frequently made by post-operative pathological analysis. CONCLUSION: This systematic review summarizes the current understanding of the characteristics of gastric IgG4-RD. Increased awareness of gastric IgG4-RD as a differential diagnosis of gastric SMT or ulcers among clinicians is crucial in order to reduce unnecessary high-risk, invasive interventions.

DOI： 10.1111/jgh.15980

PubMed

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

Immunoglobulin G4 (IgG4)-positive marginal zone lymphoma (MZL) is rare and undefined. It is unclear whether IgG4-positive MZLs have as favorable an outcome as MZLs in general. Also, correlation with IgG4-related disease (IgG4-RD) and IgG4-positive MZLs is unknown. Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for scoping reviews, we searched MEDLINE and EMBASE for all peer-reviewed articles using keywords including"IgG4" and "marginal zone lymphoma" from their inception to February 20, 2022. Twenty-two articles, including six observational studies and 24 cases from 16 case reports and case series, were included. Only one study had a comparative group, and the other five were exploratory observational studies. IgG4-positive MZLs commonly occurred in males (83.3%). It primarily involved ocular adnexa (41.7%) and skin (29.2%). Only 29.2% had concurrent IgG4-RD, and no expiration was noted. While most cases were treated with excision, resection, or clinical observation, 21.7% received rituximab-cyclophosphamide, doxorubicin, vincristine, and prednisone as a first-line treatment. This systematic review summarizes the current understanding of the characteristics of IgG4-positive MZLs. While there seems to be IgG4-RD-related and de novo IgG4-positive MZLs, future research needs to clearly define MZL with polyclonal IgG4-positive cells and IgG4-producing lymphoma. Further studies are critical to clarifying long-term prognosis and optimal surveillance planning.

DOI： 10.1111/pin.13251

PubMed

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記述言語：日本語   出版者・発行元：(一社)日本リンパ網内系学会  

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記述言語：日本語   出版者・発行元：(一社)日本リンパ網内系学会  

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記述言語：日本語   出版者・発行元：(一社)日本リンパ網内系学会  

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記述言語：日本語   出版者・発行元：(一社)日本リンパ網内系学会  

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記述言語：日本語   出版者・発行元：(公社)日本臨床細胞学会  

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Japanese Society for Lymphoreticular Tissue Research  

Castleman disease consists of several lymphoproliferative subtypes that share some histological features in the lymph nodes. On the other hand, numerous clinical findings and etiologies make the disease challenging to understand. The origin of the disease is the hyaline vascular-type unicentric Castleman disease (UCD), first reported by Benjamin Castleman et al. in 1954. Although UCD is characterized by localized lesions and lack of symptoms, multicentric Castleman disease (MCD) with multiple lesions and systemic symptoms was reported by Frizzera in 1983. MCD is further divided according to KSHV/HHV8 infection status. In KSHV/HHV8-related MCD, viral infection signals lead to excessive cytokine production, and cause clinical and pathologic abnormalities. Some cases of plasma cell-type KSHV/HHV8-negative MCD can be found in association with POEMS syndrome (polyneuropathy, organomegaly, endocrinopathy, M-proteins, and skin changes), which is a paraneoplastic syndrome. The others are idiopathic MCD, which are currently considered a heterogeneous group of diseases with overlapping pathological and clinical features. In this article, we summarize the historical evolution of Castleman disease to help understand the disease concept. We also review the latest ideas and definitions of the subtypes within the MCD spectrum and summarize the histopathological findings.

DOI： 10.3960/jslrt.21036

PubMed

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：MDPI AG  

Sinonasal inverted papilloma (SNIP) can recur; however, the factors related to tumor recurrence remain unclear. This study aimed to analyze risk factors, including human papillomavirus (HPV) infection, as well as other factors associated with SNIP recurrence. Thirty-two patients who were diagnosed with SNIP and underwent surgery between 2010 and 2019 were enrolled: 24 men and 8 women, with a mean age of 59.2 years. The mean follow-up was 57.3 months. Demographics and information about history of smoking, diabetes mellitus (DM), hypertension, allergic rhinitis, alcohol consumption, tumor stage, surgical approach, and recurrence were reviewed retrospectively. Specimens were investigated using polymerase chain reaction to detect HPV DNA (high-risk subtypes: 16, 18, 31, 33, 35, 52b, and 58; low-risk subtypes: 6 and 11). Seven patients (21.9%) experienced recurrence. HPV DNA was detected in five (15.6%) patients (high-risk subtypes, n = 2; low-risk subtypes, n = 3). Patients with recurrence of SNIP had a higher proportion of young adults and displayed higher rates of HPV infection, DM, and advanced tumor stage than those without recurrence. HPV infection, young adulthood, DM, and advanced tumor stage could be associated with a high recurrence rate, which suggests that patients with these risk factors could require close follow-up after surgery.

DOI： 10.3390/diagnostics12020454

PubMed

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Japanese Society for Lymphoreticular Tissue Research  

DOI： 10.3960/jslrt.21038

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：MDPI AG  

Secretory carcinoma is a salivary gland neoplasm first described as a mammary analogue secretory carcinoma by Skalova et al. in 2010 and redesignated as a secretory carcinoma in the 2017 World Health Organization Classification of Head and Neck Tumors. Secretory carcinoma diagnosis is reliant on specific cytological and histological findings and the detection of an ETV6-NTRK3 fusion gene. Here, we examined the clinical and cytopathological features of four cases of secretory carcinoma occurring in three males and a female, aged between 39 and 74 years. All four tumors involved the parotid gland, and were found to have the ETV6-NTRK3 fusion gene. Fine-needle aspiration-based cytology smears of all tumors displayed papillary and/or dendritic pattern clusters, some of which were associated with blood vessels. The neoplastic cells displayed enlarged nuclei with fine chromatin and small, distinct, single nucleoli. Furthermore, several neoplastic cells with a characteristic vacuolated cytoplasm were identified in each specimen. Giemsa staining revealed cytoplasmic vacuolation, intracytoplasmic metachromatic secretions and/or various sized metachromatic granules, and a background of metachromatic mucin in all four specimens. Given this, we conclude that these cytological findings, especially those of the Giemsa staining, might be helpful in the diagnosis of secretory carcinoma.

DOI： 10.3390/diagnostics11122284

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

DOI： 10.1002/cam4.4462

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その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1002/cam4.4462

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：MDPI AG  

Primary gastrointestinal (GI) T-cell neoplasms are extremely rare heterogeneous disease entities with distinct clinicopathologic features. Given the different prognoses of various disease subtypes, clinicians and pathologists must be aware of the key characteristics of these neoplasms, despite their rarity. The two most common aggressive primary GI T-cell lymphomas are enteropathy-associated T-cell lymphoma and monomorphic epitheliotropic intestinal T-cell lymphoma. In addition, extranodal natural killer (NK)/T-cell lymphoma of the nasal type and anaplastic large cell lymphoma may also occur in the GI tract or involve it secondarily. In the revised 4th World Health Organization classification, indolent T-cell lymphoproliferative disorder of the GI tract has been incorporated as a provisional entity. In this review, we summarize up-to-date clinicopathological features of these disease entities, including the molecular characteristics of primary GI T-cell lymphomas and indolent lymphoproliferative disorders. We focus on the latest treatment approaches, which have not been summarized in existing reviews. Further, we provide a comprehensive review of available literature to address the following questions: How can pathologists discriminate subtypes with different clinical prognoses? How can primary GI neoplasms be distinguished from secondary involvement? How can these neoplasms be distinguished from non-specific inflammatory changes at an early stage?

DOI： 10.3390/cancers13225774

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：MDPI AG  

The first case of hyaline vascular type of unicentric Castleman disease (HV-UCD) was reported more than six decades ago. Since patients with HV-UCD are often asymptomatic and this condition is generally discovered incidentally on imaging tests, most of the previous reports were of mediastinal origin detected by chest radiography. In recent years, improved access to imaging modalities has provided new insights in the diagnosis of this condition. In this study, we reviewed the detailed clinical and pathological findings of 38 HV-UCD cases (20 males and 18 females, mean age: 42.8 years). The most common site involved was the abdominal cavity (34.2%), followed by mediastinum (23.7%) and retroperitoneum (15.8%). In the abdominal cavity, mesenteric origin was the most common. The mean size of masses was 4.8 cm. Pathologically, thick hyalinized collagen fibers surrounding large blood vessels and calcification were observed (81.6% and 23.7%, respectively). Multinucleated giant cells resembling Warthin–Finkeldey cell were also observed in occasional cases (23.7%). This is a unique paper that summarizes detailed clinical and pathological findings of a large series of a rare disease. The clinical information presented in this paper is more plausible than previous views and is useful for accurate diagnosis and understanding of the disease.

DOI： 10.3390/diagnostics11112008

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

Thrombocytopenia, anasarca, fever, reticulin fibrosis, renal insufficiency, and organomegaly (TAFRO) syndrome is a heterogeneous entity manifesting with a constellation of symptoms described above that can occur in the context of idiopathic multicentric Castleman disease (iMCD) as well as infectious diseases, malignancies, and rheumatologic disorders. So, iMCD-TAFRO is an aggressive subtype of iMCD with TAFRO syndrome and often hyper-vascularized lymph nodes. Since we proposed diagnostic criteria of iMCD-TAFRO in 2016, we have accumulated new insights on the disorder and additional cases have been reported worldwide. In this systematic review and cohort analysis, we established and validated a definition for iMCD-TAFRO. First, we searched PubMed and Japan Medical Abstracts Society databases using the keyword "TAFRO" to extract cases. Patients with possible systemic autoimmune diseases and hematologic malignancies were excluded. Our search identified 54 cases from 50 articles. We classified cases into three categories: (1) iMCD-TAFRO (TAFRO syndrome with lymph node histopathology consistent with iMCD), (2) possible iMCD-TAFRO (TAFRO syndrome with no lymph node biopsy performed and no other co-morbidities), and (3) TAFRO without iMCD or other co-morbidities (TAFRO syndrome with lymph node histopathology not consistent with iMCD or other comorbidities). Based on the findings, we propose an international definition requiring four clinical criteria (thrombocytopenia, anasarca, fever/hyperinflammatory status, organomegaly), renal dysfunction or characteristic bone marrow findings, and lymph node features consistent with iMCD. The definition was validated with an external cohort (the ACCELERATE Natural History Registry). The present international definition will facilitate a more precise and comprehensive approach to the diagnosis of iMCD-TAFRO.

DOI： 10.1002/ajh.26292

PubMed

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その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ajh.26292

掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

DOI： 10.1038/s41379-021-00892-w

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その他リンク： https://www.nature.com/articles/s41379-021-00892-w

記述言語：日本語   出版者・発行元：(一社)日本リンパ網内系学会  

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掲載種別：研究論文（学術雑誌）   出版者・発行元：MDPI AG  

Differentiation between adult T-cell leukemia/lymphoma (ATLL) and peripheral T-cell lymphoma, not otherwise specified (PTCL-NOS), is often challenging based on pathological findings alone. Although serum anti-HTLV-1 antibody positivity is required for ATLL diagnosis, this information is often not available at the time of pathological diagnosis. Therefore, we examined whether the expression of SOX4 and p16 would be helpful for differentiating the two disease entities. We immunohistochemically examined SOX4 and p16 expression (which have been implicated in ATLL carcinogenesis) in 11 ATLL patients and 20 PTCL-NOS patients and classified them into four stages according to the percentage of positive cells. Among the ATLL cases, 8/11 (73%) were SOX4-positive, while only 2/20 (10%) PTCL-NOS cases expressed SOX4. The mean total score was 4.2 (standard deviation (SD): 0.61) in the ATLL group and 0.50 (SD: 0.46) in the PTCL-NOS group (p < 0.001). Positive expression of p16 was noted in 4/11 (36%) patients with ATLL and 3/20 (15%) patients with PTCL-NOS, with mean total scores of 1.9 (SD: 0.64) and 0.70 (SD: 0.48) in the ATLL and PTCL-NOS groups, respectively (p = 0.141). These results suggest that SOX4 may be strongly expressed in ATLL compared to PTCL-NOS cases. Therefore, it may be helpful to perform immunohistochemical staining of SOX4 when pathologists face challenges discriminating between ATLL and PTCL-NOS.

DOI： 10.3390/diagnostics11050766

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

DOI： 10.1038/s41379-020-0599-8

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その他リンク： http://www.nature.com/articles/s41379-020-0599-8

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：MDPI AG  

Objective: Human papillomaviruses (HPVs) are DNA viruses, of which over 120 types have been identified. The main screening methods for HPV-DNA include the hybrid capture II (HC-II) and polymerase chain reaction (PCR) assays. Liquid-based cytology (LBC) is a high-quality technique developed to improve the diagnostic reliability of traditional Papanicolaou tests (Pap tests). However, relatively few studies have compared the efficacy of PCR and HC-II assays using cervicovaginal LBC specimens. In this study, we conducted a comparative analysis with results derived from the HC-II assay to assess whether a PCR-based assay using a novel carboxyfluorescein (FAM)-labeled primer could be applied to cervicovaginal LBC specimens. Methods and Results: We analyzed 59 specimens diagnosed as atypical squamous cells of undetermined significance (ASCUS) by Pap tests. After extracting DNA from cervicovaginal LBC specimens, we performed PCR using a FAM-labeled consensus primer, and then conducted fragment analysis to confirm the results. The value of the kappa statistic measuring the agreement between the PCR and HC-II results was 0.8557, or “almost perfect agreement.” Conclusion: Our novel HPV-PCR assay can be successfully applied to cervicovaginal LBC specimens for the detection of HPV subtypes.

DOI： 10.3390/jmp1010003

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

DOI： 10.1007/s00795-019-00241-6

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その他リンク： http://link.springer.com/article/10.1007/s00795-019-00241-6/fulltext.html

掲載種別：研究論文（学術雑誌）   出版者・発行元：MDPI AG  

Cross-linking of antigen-specific IgE bound to the high-affinity IgE receptor (FcεRI) on the surface of mast cells with multivalent antigens results in the release of mediators and development of type 2 inflammation. FcεRI expression and IgE synthesis are, therefore, critical for type 2 inflammatory disease development. In an attempt to clarify the relationship between eosinophilic chronic rhinosinusitis (ECRS) and mast cell infiltration, we analyzed mast cell infiltration at lesion sites and determined its clinical significance. Mast cells are positive for c-kit, and IgE in uncinated tissues (UT) and nasal polyps (NP) were examined by immunohistochemistry. The number of positive cells and clinicopathological factors were analyzed. Patients with ECRS exhibited high levels of total IgE serum levels and elevated peripheral blood eosinophil ratios. As a result, the number of mast cells with membranes positive for c-kit and IgE increased significantly in lesions forming NP. Therefore, we classified IgE-positive mast cells into two groups: membrane IgE-positive cells and cytoplasmic IgE-positive cells. The amount of membrane IgE-positive mast cells was significantly increased in moderate ECRS. A positive correlation was found between the membrane IgE-positive cells and the radiological severity score, the ratio of eosinophils, and the total serum IgE level. The number of cytoplasmic IgE-positive mast cells was significantly increased in moderate and severe ECRS. A positive correlation was observed between the cytoplasmic IgE-positive cells and the radiological severity score, the ratio of eosinophils in the blood, and the total IgE level. These results suggest that the process of mast cell internalization of antigens via the IgE receptor is involved in ECRS pathogenesis.

DOI： 10.3390/ijms21051843

Scopus

PubMed

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Japanese Society for Lymphoreticular Tissue Research  

DOI： 10.3960/jslrt.19037

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開催年月日： 2023年7月8日

会議種別：口頭発表（一般）  

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開催年月日： 2023年6月23日 - 2023年6月24日

会議種別：ポスター発表  

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開催年月日： 2023年6月23日 - 2023年6月24日

会議種別：口頭発表（一般）  

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開催年月日： 2023年3月4日 - 2023年3月5日

会議種別：シンポジウム・ワークショップ パネル（公募）  

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開催年月日： 2022年11月5日 - 2022年11月6日

会議種別：シンポジウム・ワークショップ パネル（指名）  

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開催年月日： 2022年9月16日 - 2022年9月17日

会議種別：シンポジウム・ワークショップ パネル（指名）  

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開催年月日： 2022年6月23日 - 2022年6月25日

会議種別：シンポジウム・ワークショップ パネル（指名）  

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開催年月日： 2022年6月23日 - 2022年6月25日

会議種別：ポスター発表  

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開催年月日： 2022年6月11日 - 2022年6月12日

会議種別：ポスター発表  

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開催年月日： 2022年4月14日 - 2022年4月16日

会議種別：ポスター発表  

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開催年月日： 2022年4月14日 - 2022年4月16日

記述言語：アブハズ語   会議種別：ポスター発表  

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開催年月日： 2022年4月14日 - 2022年4月16日

会議種別：ポスター発表  

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開催年月日： 2022年4月14日 - 2022年4月16日

会議種別：ポスター発表  

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開催年月日： 2022年4月14日 - 2022年4月16日

会議種別：口頭発表（一般）  

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開催年月日： 2021年12月2日 - 2021年12月4日

記述言語：英語  

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開催年月日： 2021年12月2日 - 2021年12月4日

記述言語：英語  

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開催年月日： 2021年11月20日 - 2021年11月21日

記述言語：日本語   会議種別：シンポジウム・ワークショップ パネル（指名）  

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開催年月日： 2021年11月20日 - 2021年11月21日

記述言語：日本語   会議種別：シンポジウム・ワークショップ パネル（指名）  

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開催年月日： 2021年6月24日 - 2021年6月26日

記述言語：日本語   会議種別：ポスター発表  

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開催年月日： 2021年6月24日 - 2021年6月26日

記述言語：日本語   会議種別：ポスター発表  

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開催年月日： 2021年

記述言語：日本語  

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開催年月日： 2020年11月21日 - 2020年11月22日

記述言語：日本語   会議種別：シンポジウム・ワークショップ パネル（指名）  

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開催年月日： 2020年7月1日 - 2020年7月31日

記述言語：日本語  

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開催年月日： 2020年7月1日 - 2020年7月31日

記述言語：日本語  

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開催年月日： 2019年11月16日 - 2019年11月17日

記述言語：日本語   会議種別：ポスター発表  

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開催年月日： 2019年11月16日 - 2019年11月17日

記述言語：日本語   会議種別：ポスター発表  

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開催年月日： 2019年7月13日

記述言語：日本語   会議種別：口頭発表（一般）  

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会議種別：口頭発表（一般）  

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会議種別：口頭発表（一般）  

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会議種別：口頭発表（一般）  

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会議種別：口頭発表（一般）  

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会議種別：口頭発表（一般）  

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会議種別：口頭発表（一般）  

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