abstract：:There are several reports of pleural adenomatoid (microcystic) mesothelioma, but peritoneal adenomatoid mesothelioma is extremely rare. A 64-year-old Japanese woman presented with no symptoms and no asbestos exposure history. An abdominal computed tomography scan revealed multiple hypervascular masses on the liver sur...

journal_title：Pathology international

authors： Mori D,Kido S,Hiraki M,Sumi K,Ureshino N,Masuda M,Nabeshima K,Akashi M

更新日期：2020-11-01 00:00:00

abstract：:Microscopic colitis (MC), encompassing collagenous colitis and lymphocytic colitis, is featured by chronic diarrhea, normal-looking endoscopic findings and unique microscopic appearance. After reviewing biopsied nonspecific colitis, we propose the third type of MC: colitis nucleomigrans (CN). Histopathological criteri...

journal_title：Pathology international

authors： Tachibana M,Hanaoka T,Watanabe S,Matsushita M,Isono T,Tsutsumi Y

更新日期：2020-10-01 00:00:00

abstract：:The histology of basaloid squamous cell carcinoma (BSCC) can resemble that of adenoid cystic carcinoma (AdCC). Herein, we report two cases of BSCC with adenoid cystic-like features (BSCC-AdC). We collected cases of AdCC and BSCC of the head and neck region, extracted two cases with unusual histology, and reexamined th...

journal_title：Pathology international

authors： Kusafuka K,Yagi H,Baba S,Inagaki H,Tsuchiya C,Hirata K,Muramatsu A,Suzuki M,Arai K,Terada T

更新日期：2020-10-01 00:00:00

abstract：:The biopsy-based diagnosis of autoimmune pancreatitis (AIP) is difficult but is becoming imperative for pathologists due to the increased amount of endoscopic ultrasound-guided biopsy tissue. To cope with this challenge, we propose guidance for the biopsy diagnosis of type 1 AIP. This guidance is for pathologists and ...

journal_title：Pathology international

authors： Notohara K,Kamisawa T,Fukushima N,Furukawa T,Tajiri T,Yamaguchi H,Aishima S,Fukumura Y,Hirabayashi K,Iwasaki E,Kanno A,Kasashima S,Kawashima A,Kojima M,Kubota K,Kuraishi Y,Mitsuhashi T,Naito Y,Naitoh I,Nakase H,Ni

更新日期：2020-10-01 00:00:00

abstract：:BRCA1-associated protein 1 (BAP1) or methylthioadenosine phosphorylase (MTAP) immunohistochemistry (IHC) or 9p21 fluorescence in situ hybridization (FISH) are useful for the diagnosis of malignant pleural mesothelioma (MPM). However, the effect of these assays on the diagnostic yield of effusion cytology in MPM cases ...

journal_title：Pathology international

authors： Kinoshita Y,Hamasaki M,Matsumoto S,Yoshimura M,Sato A,Tsujimura T,Kamei T,Kawahara K,Nabeshima K

更新日期：2020-09-01 00:00:00

abstract：:Solitary pulmonary capillary hemangiomas (SPCHs) are recently recognized, rare benign lesions that form solitary nodules owing to capillary proliferation. These lesions are usually detected incidentally as small ground-glass nodules (GGNs) on computed tomography (CT), and progressively enlarge over time. The radiologi...

journal_title：Pathology international

authors： Hashimoto H,Matsumoto J,Murakami M,Hiyama N,Yamaguchi H,Kusakabe M,Horiuchi H,Morikawa T

更新日期：2020-08-01 00:00:00

abstract：:Niemann-Pick disease type C (NPC) is a neurovisceral lipid-storage disease. Although NPC patients show lipid storage in anterior horn cells of the spinal cord, little information is available regarding the electron microscopic analyses of the morphologies of intra-endosomal lipid like-materials in the anterior horn ce...

journal_title：Pathology international

authors： Kusunoki-Ii M,Kohama H,Kato K,Nomura Y,Nagashima K,Ninomiya H,Kato M,Kato S

更新日期：2020-07-01 00:00:00

abstract：:Ameloblastoma is an odontogenic tumor of the jaw. It most frequently occurs in the mandible, and less often in the maxilla. Mandibular ameloblastoma harbors a BRAF mutation that causes a valine (V) to glutamic acid (E) substitution at codon 600 (BRAFV600E ). We examined specimens from 32 Japanese patients to detect th...

journal_title：Pathology international

authors： Seki-Soda M,Sano T,Ito K,Yokoo S,Oyama T

更新日期：2020-04-01 00:00:00

abstract：:Nodular fasciitis (NF) is a self-limiting benign disease that is characterized by rapid proliferation of fibroblastic and myofibroblastic cells. The characteristic gene fusion containing the USP6 gene is a genetic hallmark of NF and MYH9-USP6 is the most frequent fusion, suggesting that NF is not a reactive condition ...

journal_title：Pathology international

authors： Teramura Y,Yamazaki Y,Tanaka M,Sugiura Y,Takazawa Y,Takeuchi K,Nakayama T,Kaneko T,Musha Y,Funauchi Y,Ae K,Matsumoto S,Nakamura T

更新日期：2019-12-01 00:00:00

abstract：:We herein describe a rare case of low-grade endobronchial tumor that exhibited two distinct features of typical carcinoid and acinic cell carcinoma (ACC) by immunohistochemical and ultrastructure study. ACC was suspected on transbronchial biopsy. The resected specimen showed that the tumor surface comprised an acinic ...

journal_title：Pathology international

authors： Watanabe H,Miyagawa-Hayashino A,Imabayashi T,Kishimoto M,Shimomura M,Honda K,Omatsu I,Shimada E,Inoue M,Takayama K,Konishi E

更新日期：2019-12-01 00:00:00

abstract：:We report a case of cutaneous squamous cell carcinoma (CSCC), initially coexisting with invasive extramammary Paget's disease (EMPD), in the scrotum of an 84-year-old man. The patient initially had a rash and pruritus before presenting with a pedunculated scrotal mass surrounded by widespread erythema. He underwent to...

journal_title：Pathology international

authors： Kitano A,Izumi M,Tamura K,Tonegawa M,Etou T,Kishida Y

更新日期：2019-10-01 00:00:00

abstract：:Humoral factors from cancer-associated fibroblasts (CAFs) reportedly affect epidermal growth factor receptor tyrosine kinase inhibitor (EGFR-TKI) resistance in cancer cells with EGFR mutations. The aim of this study was to identify the robust humoral factors secreted from CAFs that induce the primary resistance to EGF...

journal_title：Pathology international

authors： Suzuki E,Yamazaki S,Naito T,Hashimoto H,Okubo S,Udagawa H,Goto K,Tsuboi M,Ochiai A,Ishii G

更新日期：2019-08-01 00:00:00

abstract：:Epstein-Barr virus (EBV) infection is associated with pathogenesis of various cancers, including extranodal natural killer/T-cell lymphoma, nasal type (ENKL). ENKL tumor cells are positive for EBV-encoded RNA1 (EBER1), which is the most useful marker to identify ENKL tumor cells in histopathology. Currently, EBER1 in ...

journal_title：Pathology international

authors： Ito Y,Makita S,Maeshima AM,Hatta S,Yuda S,Suzuki T,Fukuhara S,Munakata W,Taniguchi H,Suzuki T,Maruyama D,Izutsu K

更新日期：2019-07-01 00:00:00

abstract：:A 35-year-old Japanese man who had experienced hoarseness for 10 years presented with a vocal cord lesion. A gross examination revealed a left vocal cord polyp occupying two-thirds of the vocal space. The endoscopically resected lesion contained scattered atypical fibroblastic, stellate, or ganglion-like cells with mu...

journal_title：Pathology international

authors： Yorita K,Togashi Y,Nakagawa H,Miyazaki K,Sakata S,Baba S,Takeuchi K,Hayashi Y,Murakami I,Kuroda N,Oda Y,Kohashi K,Yamada Y,Kiyozawa D,Michal M,Michal M

更新日期：2019-06-01 00:00:00

abstract：:Pleomorphic lobular carcinoma (PLC) of the breast is a variant of lobular carcinoma, characterized by loss of E-cadherin expression and high-grade morphologies. Whether the pathogenesis of PLC is in the ductal or the lobular lineage has been discussed. In this report, a case of PLC combined with apocrine carcinoma is ...

journal_title：Pathology international

authors： Ishii A,Oishi T,Kakuda Y,Yasui H,Kawata T,Muramatsu K,Takahashi K,Sugino T

更新日期：2019-05-01 00:00:00

abstract：:Anaplastic large cell lymphoma (ALCL) with TP63 rearrangement is a new entity and has the most dismal prognosis in all types of ALCL. This might be due to the resulting fusion protein having N-terminal truncated p63 with high oncogenic ability. Since this N-terminal domain has the function of tumor suppressor activity...

journal_title：Pathology international

authors： Yamashita T,Higashi M,Kawano R,Momose S,Tokuhira M,Kizaki M,Tamaru JI

更新日期：2019-03-01 00:00:00

abstract：:Histological grading of prostate cancer is one of the most important tissue-based parameters for prediction of outcome and treatment response. Gleason grading remains the foundation of prostate cancer grading, but has undergone a series of changes in the past 30 years, often initiated by consensus conference decisions...

journal_title：Pathology international

authors： Egevad L,Delahunt B,Yaxley J,Samaratunga H

更新日期：2019-02-01 00:00:00

abstract：:Methotrexate (MTX) is currently used as first-line anchor drug for rheumatoid arthritis (RA). Therefore, the number of MTX-associated lymphoproliferative disorders, including Epstein-Barr virus-positive mucocutaneous ulcer (EBVMCU), has increased. Some aspects of MTX-associated EBVMCU (MTX-EBVMCU), particularly clinic...

journal_title：Pathology international

authors： Satou A,Banno S,Hanamura I,Takahashi E,Takahara T,Nobata H,Katsuno T,Takami A,Ito Y,Ueda R,Nakamura S,Tsuzuki T

更新日期：2019-01-01 00:00:00

abstract：:Elderly patients with Epstein-Barr virus (EBV) infection are at increased risk for developing B-cell lymphoproliferative disorder (B-LPD) due to immunosenescence. Here, we describe a case of a 75-year-old man who developed an EBV-positive (EBV+) mucocutaneous ulcer (EBVMCU) in the gingiva with spontaneous regression. ...

journal_title：Pathology international

authors： Daroontum T,Kohno K,Inaguma Y,Okamoto A,Okamoto M,Kimura Y,Nagahama M,Sakakibara A,Satou A,Nakamura S

更新日期：2019-01-01 00:00:00

abstract：:The incidence of lymphoma has rapidly increased over the last 40 years in Japan, following a trend that is very similar to that of breast cancer. In particular, the relative frequency of follicular lymphoma (FL) has reached that in Western countries. Given its indolence, a "watch-and-wait" approach is often applied to...

journal_title：Pathology international

authors： Yoshino T,Takata K,Tanaka T,Sato Y,Tari A,Okada H

更新日期：2018-12-01 00:00:00

abstract：:This study aims to evaluate the impact on the implementation of multiple strategies to improve medical student's pathology learning experience. In two consecutive years, medical students after a whole year of enrolling in pathology teaching, were invited to complete questionnaires rating and commenting on the personal...

journal_title：Pathology international

authors： Gopalan V,Kasem K,Pillai S,Olveda D,Ariana A,Leung M,Lam AKY

更新日期：2018-07-24 00:00:00

abstract：:Hereditary leiomyomatosis and renal cell cancer (HLRCC) is a rare genetic disorder characterized by cutaneous and uterine leiomyomatosis with RCC. This disorder is caused by a germline mutation in the fumarate hydratase (FH) gene, which encodes an important enzyme of the tricarboxylic acid (TCA) cycle. This mutation d...

journal_title：Pathology international

authors： Matsumoto K,Udaka N,Hasumi H,Nakaigawa N,Nagashima Y,Tanaka R,Kato I,Yao M,Furuya M

更新日期：2018-05-24 00:00:00

abstract：:It has been reported that N-myc downstream regulated gene 1 (NDRG1) is related to the prognosis of non-small cell lung cancer (NSCLC), and associated with c-Myc degradation in NSCLC cell lines. However, the relationship of NDRG1 to prognosis or c-Myc expression in lung adenocarcinoma has not been well clarified. The p...

journal_title：Pathology international

authors： Dai T,Dai Y,Murata Y,Husni RE,Nakano N,Sakashita S,Noguchi M

更新日期：2018-04-01 00:00:00

abstract：:Nuclear pseudoinclusions (NPIs) are classically found in papillary thyroid carcinoma and meningioma. Although NPIs have been described in melanocytic lesions, there is no systematic analysis of potential relationship between NPIs and other clinicopathological characteristics of melanoma. We examined the presence of NP...

journal_title：Pathology international

authors： Donizy P,Kaczorowski M,Biecek P,Halon A,Matkowski R

更新日期：2018-02-01 00:00:00

abstract：:High-grade transformation (HGT)/dedifferentiation is an unusual phenomenon in salivary gland carcinomas. Here we report a case of adenoid cystic carcinoma (ACC) with HGT/dedifferentiation to myoepithelial carcinoma, occurring in the epipharynx of a 42-year-old woman. The surgically resected tumor was a pedunculated ma...

journal_title：Pathology international

authors： Tando S,Nagao T,Kayano K,Fushiki S,Itoh K

更新日期：2018-02-01 00:00:00

abstract：:Epstein-Barr virus (EBV)-associated gastric carcinoma (EBVGC) is defined as a neoplasm comprising monoclonal proliferation of EBV-infected gastric epithelial cells. Although the typical histology is gastric carcinoma with lymphoid stroma (GCLS), the histologic features of the tumor vary. We report herein the case of a...

journal_title：Pathology international

authors： Shimizu A,Takahashi T,Kushima R,Sentani K,Yasui W,Matsuno Y

更新日期：2018-01-01 00:00:00

abstract：:We report a case of ALK-positive renal cell carcinoma coincident with Hodgkin lymphoma. The patient was a 19 year-old-girl without sickle cell trait. The right renal tumor was discovered concomitantly with Hodgkin lymphoma (HL). After chemotherapy for HL, right nephrectomy was performed. Microscopically, the tumor sho...

journal_title：Pathology international

authors： Oyama Y,Nishida H,Kusaba T,Kadowaki H,Arakane M,Daa T,Watanabe D,Akita Y,Sato F,Mimata H,Yokoyama S

更新日期：2017-12-01 00:00:00

abstract：:A pulmonary Langerhans cell histiocytosis is presented in a 40 year-old woman two years after bilateral lung transplantation for emphysema without any signs of Langerhans cells proliferation in the explanted lungs. A microsatellite molecular analysis showed the proliferating cells were generated in a recipient cellula...

journal_title：Pathology international

authors： Gómez-Román J,Zarrabeitia MT,Santurtún A,Parra JA,Azueta Etxebarría A,Cifrian JM,Freire Salinas J

更新日期：2017-12-01 00:00:00

abstract：:Several reports have demonstrated the use of whole-slide imaging (WSI) for primary pathological diagnosis, but no such studies have been published from Asia. We retrospectively collected 1070 WSI specimens from 900 biopsies and small surgeries conducted in nine hospitals. Nine pathologists, who participated in this st...

journal_title：Pathology international

authors： Tabata K,Mori I,Sasaki T,Itoh T,Shiraishi T,Yoshimi N,Maeda I,Harada O,Taniyama K,Taniyama D,Watanabe M,Mikami Y,Sato S,Kashima Y,Fujimura S,Fukuoka J

更新日期：2017-11-01 00:00:00

abstract：:We elucidated clinicopathological characteristics of chondroblastoma (CB) in Japan, and reliable clinicopathologic parameters predicting local recurrence and/or metastasis. Clinicopathological profiles of 103 CB (80 male, 23 female) in extra-craniofacial bones were retrieved. Numerical scoring of nine pathological and...

journal_title：Pathology international

authors： Konishi E,Nakashima Y,Mano M,Tomita Y,Kubo T,Araki N,Morii E,Yoshikawa H,Haga H,Toguchida J,Ueda T,Osawa M,Hoshi M,Inoue T,Aono M,Yanagisawa A

更新日期：2017-10-01 00:00:00

abstract：:The roles of Wnt protein in carcinogenesis have been well documented in human cancers. Wls is a key modulator for the secretion of Wnt protein. We previously found that Wls was aberrantly expressed in colorectal carcinomas. Studies have revealed that dysregulation of Wnt signal transduction plays an important role in ...

journal_title：Pathology international

authors： Zhang W,Tao H,Chen X,Sugimura H,Wang J,Zhou P

更新日期：2017-03-01 00:00:00

abstract：:Our objective is to elucidate the usefulness of maspin/p53 double immunostaining on biliary brushing cytology specimens. We first examined the expression of maspin in the biliary epithelium with variable degrees of dysplasia using surgically resected specimens (n = 56). Maspin appeared to be overexpressed in a stepwis...

journal_title：Pathology international

authors： Kanzawa M,Sanuki T,Onodera M,Fujikura K,Itoh T,Zen Y

更新日期：2017-02-01 00:00:00

abstract：:Breast cancer patients have a generally increased risk of developing second cancers. The object of this study was to clarify the increased as well as decreased incidence of cancers in breast cancer patients using autopsy cases. 164 211 autopsy cases in the Annual of Pathological Autopsy Cases in Japan from 2002 to 201...

journal_title：Pathology international

authors： Shibahara Y,Sugawara Y,Miki Y,Hata S,Takahashi H,Nakamura Y,Suzuki T,Ohuchi N,Tsuji I,Sasano H

更新日期：2016-12-01 00:00:00

abstract：:Differentiation of malignant pleural mesothelioma (MPM) from benign mesothelial proliferation remains problematic. Loss of nuclear staining of BRCA1-associated protein 1 (BAP1; detected using immunohistochemistry (IHC)) and homozygous deletion (HD) of p16 (detected using fluorescence in situ hybridization (FISH)) are ...

journal_title：Pathology international

authors： Hida T,Hamasaki M,Matsumoto S,Sato A,Tsujimura T,Kawahara K,Iwasaki A,Okamoto T,Oda Y,Honda H,Nabeshima K

更新日期：2016-10-01 00:00:00

abstract：:Ovarian non-gestational choriocarcinomas co-existing with adenocarcinoma are extremely rare and have been reported as epithelial ovarian carcinomas of a "non-germ cell origin" with "choriocarcinomatous differentiation". Although the cellular origin of non-gestational choriocarcinoma may be post-meiotic ovarian germ ce...

journal_title：Pathology international

authors： Koyanagi T,Fujiwara H,Usui H,Ariga H,Machida S,Takei Y,Saga Y,Shozu M,Fukushima N,Niki T,Matsubara S,Suzuki M

更新日期：2016-09-01 00:00:00

abstract：:We have reported that the function of histamine and its receptors (HRs) has a close relationship with the development of nonalcoholic fatty liver disease (NAFLD). However, much less is known regarding its pathogenic and molecular mechanism(s), including the early stage of hepatic and intestinal function for lipid and ...

journal_title：Pathology international

authors： Yamada S,Guo X,Wang KY,Tanimoto A,Sasaguri Y

更新日期：2016-07-01 00:00:00

abstract：:We report a very rare case of combined thymic carcinomas: undifferentiated thymic carcinoma coexisting with type AB thymoma. The precise mechanism underlying the coexistence of these tumors remains unknown. Therefore, we used clonality analysis to ascertain whether the two tumors were clonally related. A 63-year-old w...

journal_title：Pathology international

authors： Karino F,Yokose T,Matsukuma S,Miyagi Y,Murakami S,Ito H,Nakayama H,Yamada K

更新日期：2016-07-01 00:00:00

abstract：:A small proportion of patients with chronic lymphocytic leukemia (CLL) may progress to large cell lymphoma, or Richter syndrome (RS). The large cells of RS may arise through transformation of the original CLL clone (clonally related) or represent a new neoplasm (clonally unrelated), which might be Epstein-Barr virus (...

journal_title：Pathology international

authors： Chen YA,Wang RC,Yang Y,Chuang SS

更新日期：2016-07-01 00:00:00

abstract：:Intratumoral ossification has been reported in a number of epithelial tumors, but its presence in intraductal papillary mucinous neoplasms (IPMNs) is very rare. Herein, we present a rare case of IPMN with marked ossification. A 56-year-old Japanese man was under follow-up for a previously diagnosed IPMN. Seven years l...

journal_title：Pathology international

authors： Hadano A,Hirabayashi K,Yamamuro H,Takanashi Y,Yamada M,Kawanishi A,Kawaguchi Y,Furukawa D,Nakagohri T,Imai Y,Nakamura N,Mine T

更新日期：2016-06-01 00:00:00

abstract：:Amyloidosis refers to a group of diseases with amyloid fibrils deposited in various organs and is classified into more than 30 diseases in humans based on the kind of amyloid protein. In order to elucidate the molecular pathogenesis of human amyloidosis, we studied the molecular mechanism of amyloid fibril formation i...

journal_title：Pathology international

authors： Naiki H,Okoshi T,Ozawa D,Yamaguchi I,Hasegawa K

更新日期：2016-04-01 00:00:00