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Diagnostic Pathology

Chiaki Kubo, Shigenori Nagata, Takeshi Fukuda, Rieko Kano, Takaaki Tanaka, Katsuyuki Nakanishi, Masahiko Ohsawa, Shin-Ichi Nakatsuka
BACKGROUND: Ovarian serous borderline tumor/atypical proliferative serous tumor (SBT/APST) is characterized by presenting at an early stage and much longer survival than high-grade serous carcinoma. Given that the prognosis of ovarian SBT/APST with no invasive features is excellent, remote relapse after surgery can pose a diagnostic pitfall. Bone metastasis as transformed low-grade carcinoma is an extremely rare initial presentation of recurrence in patients whose primary tumor was confined to the ovaries...
June 30, 2018: Diagnostic Pathology
Xuxia Shen, Yan Jin, Lei Shen, Yihua Sun, Haiquan Chen, Yuan Li
BACKGROUND: Multilocular thymic cysts (MTCs) associated with thymomas or thymic carcinomas (TCs) are rare and may be misdiagnosed as other benign cystic lesions. METHODS: We retrospectively analysed 18 cases of thymomas or TCs associated with MTCs, which were retrieved from 309 consecutive patients with thymomas or TCs in the Chinese population, emphasizing clinicopathologic characteristics, immunophenotypes and the prognostic impact. RESULTS: A total of 14 tumours were described as cystic or solid-cystic masses, and the other 4 tumours were described as solid masses...
June 26, 2018: Diagnostic Pathology
Alia Albawardi, M Ruhul Quddus, Shamsa Al Awar, Saeeda Almarzooqi
BACKGROUND: The incidence of abnormal cervical smears in the United Arab Emirates (UAE) is 3.6%. Data regarding specific high-risk HPV (hrHPV) genotypes are insufficient. Identification of hrHPV subtypes is essential to allow formulating effective vaccination strategies. METHODS: A total of 75 archival cervical cone biopsies with HSIL or higher lesions (2012-2016) were retrieved from a tertiary hospital, including HSIL (n = 70), adenocarcinoma in-situ (n = 1) and squamous cell carcinoma (n = 4)...
June 26, 2018: Diagnostic Pathology
Xiaowei Zhang, Haiming Wang, Qian Li, Yunpeng Liu, Peiqing Zhao, Tao Li
The editor has retracted this article [1] because of flaws and inconsistencies in the methodology, reporting and interpretation of the data.
June 25, 2018: Diagnostic Pathology
Ljudmilla A G Nielsen, Julie A Bangsø, Kim H Lindahl, Rikke H Dahlrot, Jacob V B Hjelmborg, Steinbjørn Hansen, Bjarne W Kristensen
BACKGROUND: The Ki-67 Labelling Index (LI) is used as an ancillary tool in glioma diagnostics. Interobserver variability has been reported and no precise guidelines are available. Nor is it known whether novel digital approaches would be an advantage. Our aim was to evaluate the inter- and intraobserver variability of the Ki-67 LI between two pathologists and between pathologists and digital quantification both in whole tumour slides and in hot spots using narrow but diagnostically relevant intervals...
June 9, 2018: Diagnostic Pathology
Chih-Yi Liu, Shih-Hung Huang
BACKGROUND: Lymphoepithelioma-like carcinoma (LELC) is a rare entity among thyroid tumors. Based on the limited number of case reports that exist, the association of Epstein-Barr virus (EBV) with primary thyroid LELCs seems inconsistent. CASE PRESENTATION: We present a confusing cytological case of lymphoepithelioma-like thyroid carcinoma with expression of EBV. The patient presented with a central neck mass and bilateral lymphadenopathy. Fine-needle aspiration cytology revealed three-dimensional and syncytial fragments of epithelioid cells accompanied by small lymphocytes...
June 9, 2018: Diagnostic Pathology
Rodrigo Javier, Nawal Shaikh, Maciej S Lesniak, Adam Sonabend, Roger Stupp, Amir Behdad, Craig Horbinski
Primary central nervous system lymphoma (PCNSL) is an uncommon tumor in the brain. Although most PCNSL are readily diagnosed as diffuse large B cell lymphoma (DLBCL) on the first biopsy, very rare cases have been described in which the first detected intracerebral lesions are non-neoplastic, and are composed mostly of perivascular T cells, not B cells. This phenomenon is known as "sentinel lesions."
June 5, 2018: Diagnostic Pathology
Bao-Hua Yu, Bai-Zhou Li, Xiao-Yan Zhou, Da-Ren Shi, Wen-Tao Yang
BACKGROUND: Nuclear forkhead box protein P1 (N-FOXP1) expression in invasive breast cancer has been documented in the literature. However, the FOXP1 expression patterns at different stages of breast cancer progression are largely unknown, and the significance of cytoplasmic FOXP1 (C-FOXP1) expression in breast cancer has not been well illustrated. The aims of this study were to investigate FOXP1 expression patterns in invasive ductal carcinoma (IDC), ductal carcinoma in situ (DCIS), atypical ductal hyperplasia (ADH) and usual ductal hyperplasia (UDH), and to analyze the clinicopathological relevance of C-FOXP1 and its prognostic value in IDC...
May 30, 2018: Diagnostic Pathology
Latifa Chkioua, Hela Boudabous, Ibtissem Jaballi, Oussama Grissa, Hadhami Ben Turkia, Neji Tebib, Sandrine Laradi
BACKGROUND: The mucopolysaccharidosis type I (MPS I) is a lysosomal storage disease resulting from the defective activity of the enzyme α-L-iduronidase (IDUA). The disease has three major clinical subtypes (severe Hurler syndrome, intermediate Hurler-Scheie syndrome and attenuated Scheie syndrome). We aim to identify the genetic variants in MPS I patients and to investigate the effect of the novel splice site mutation on splicing of IDUA- mRNA variability using bioinformatics tools. METHODS: The IDUA mutations were determined in four MPS I patients from four families from Northern Tunisia, by amplifying and sequencing each of the IDUA exons and intron-exon junctions...
May 29, 2018: Diagnostic Pathology
Alison M Moore, Olga Moshkin, Gordon J Swain, Susan Crocker, David P LeBrun
BACKGROUND: We report the first case of composite lymphoma consisting of chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL), follicular lymphoma (FL) and high-grade B-cell lymphoma with MYC and BCL2 rearrangements within the same needle biopsy in which a clonal relationship between the FL and high-grade B-cell lymphoma components was demonstrated by molecular cytogenetics. CASE PRESENTATION: An 85-year-old man presented with masses in his neck and right groin...
May 24, 2018: Diagnostic Pathology
Jialin Ren, Tingting Liu, Yang Han, Qiongzi Wang, Yanzhi Chen, Guang Li, Lihong Jiang
BACKGROUND: Radiotherapy is one of the most common and effective treatment methods for cancer, and improving the radiosensitivity of tumor tissues during the treatment process is vital. We report the mechanisms of glycogen synthase kinase 3 (GSK-3) β-regulated autophagy and the effects of autophagy on radiosensitivity in non-small cell lung cancer (NSCLC). METHOD: Immunohistochemical staining was performed to determine GSK-3β tissue expression in 89 NSCLC patients with follow-up data and the expression status of GSK-3β and autophagy in NSCLC tissues after X-ray radiotherapy...
May 24, 2018: Diagnostic Pathology
Haiyue Wang, Zhongwu Li, Bin Dong, Wei Sun, Xin Yang, Ruping Liu, Lixin Zhou, Xiaozheng Huang, Ling Jia, Dongmei Lin
BACKGROUND: Recent research supports a significant role of immune checkpoint inhibitors in the treatment of solid tumors. However, relevant reports for programmed death-ligand 1 (PD-L1) and CD8+ tumor-infiltrating lymphocytes (TILs) in pulmonary neuroendocrine tumors (PNETs) have not been fully studied. Therefore, we investigated PNETs for the expression of PD-L1 and infiltration by CD8+ TILs as well as the prognostic value of both factors. METHODS: In total, 159 specimens of PNETs (35 TC, 2 AC, 28 LCNEC, 94 SCLC) were included in this study...
May 22, 2018: Diagnostic Pathology
Kenichi Mizutani, Sohsuke Yamada, Xin Guo, Chizuru Futatsuya, Motona Kumagai, Akihiro Shioya, Akane Aikawa, Satoko Nakada, Nozomu Kurose, Hiroshi Minato, Takayuki Nojima
BACKGROUND: The occurrence of malignant lymphoma after delivery is an extremely rare event. Although several cases of Hodgkin lymphoma and B cell lymphoma and a few cases of peripheral T cell lymphoma (PTCL) after delivery have been reported, there are no report of autopsy cases of PTCL in the puerperal period. CASE PRESENTATION: A 32-year-old Japanese woman with a past medical history of atopic dermatitis and bronchial asthma presented with generalized eruptions four days after the delivery of her first child; generalized skin induration and lymphadenopathy subsequently emerged...
May 22, 2018: Diagnostic Pathology
Peifeng Li, Jing Ma, Xiumin Zhang, Yong Guo, Yixiong Liu, Xia Li, Danhui Zhao, Zhe Wang
BACKGROUND: Small cell carcinoma of the uterine cervix is a rare and highly malignant tumor, and its etiopathogenesis is strongly related to high-risk HPV infections. METHODS: The clinicopathological data of 30 cases of cervical primary small cell carcinoma were retrospectively analyzed. In situ hybridization, polymerase chain reaction and reverse dot-blot hybridization were employed to detect HPV DNA in both small cell carcinoma and other coexisting epithelial tumors...
May 22, 2018: Diagnostic Pathology
Yingxin Huang, Yan Lei, Qi Wang, Dazhou Li, Lili Ma, Lili Guo, Minshan Tang, Guanglong Liu, Qianwen Yan, Lan Shen, Guihui Tong, Zhiliang Jing, Yan Zhang, Yongjian Deng
BACKGROUND: Telepathology (TP) provides remote pathology services for primary diagnosis practices, including intraoperative consultation of surgical pathology; it has not been widely implemented in China. In this study, the results of an implementation were reported, which lasted for two and a half years, and demonstrated the experience of the diagnosis of the intraoperative frozen sections by using TP consultation platform of Southern Medical University and Guangzhou Huayin Medical Laboratory Center (SMU-HUAYIN TP) in China...
May 14, 2018: Diagnostic Pathology
Takahiro Matsui, Tetsuo Maeda, Shinsuke Kusakabe, Hideyuki Arita, Kenji Yagita, Eiichi Morii, Yuzuru Kanakura
BACKGROUND: The diagnosis of granulomatous amoebic encephalitis is challenging for clinicians because it is a rare and lethal disease. Previous reports have indicated that Acanthamoeba with some specific genotypes tend to cause the majority of human infections. We report a case of granulomatous amoebic encephalitis caused by Acanthamoeba spp. with genotype T18 in an immunodeficient patient in Japan after allogenic bone marrow transplantation, along with the morphological characteristics and genetic analysis...
May 10, 2018: Diagnostic Pathology
Ryuko Nakayama, Yuki Togashi, Satoko Baba, Yo Kaku, Yuki Teramoto, Takaki Sakurai, Hironori Haga, Kengo Takeuchi
BACKGROUND: Epithelioid cell histiocytoma (ECH), which is also known as epithelioid benign fibrous histiocytoma, has been classified as a rare variant of fibrous histiocytoma (FH). However, the recent detection of ALK protein expression and/or ALK gene rearrangement in ECH suggests that it might be biologically different from conventional FH. CASE PRESENTATION: A 27-year-old male presented with nodule on his left foot, which had been present for 5 years. A macroscopic examination revealed an exophytic, hyperkeratotic nodule on the dorsum of the left foot...
May 10, 2018: Diagnostic Pathology
Perikles Kosmidis, Barbara Mankel, Falko Fend, Patrick Adam
BACKGROUND: The translocation t(14;18)(q32;q21) is the genetic hallmark of follicular lymphoma (FL) and can be observed in 85-90% of cases. Whether the translocation is restricted to cells with germinal center B-cell phenotype or can be observed in other cell types of the microenvironment remains debated. Of interest, cases of associated histiocytic and dendritic cell sarcomas arising in the background of FL have been shown to be clonally related and carry the t(14;18), suggesting a "transdifferentiation" of the malignant FL clone into a neoplasm of a different hematopoietic lineage...
May 2, 2018: Diagnostic Pathology
Huifen Li, Weihua Huang, Rongcheng Luo
The editor has retracted this article [1] because it shows significant overlap with the following articles (amongst others) [2, 3]. None of the authors responded to correspondence regarding this retraction.
May 2, 2018: Diagnostic Pathology
Yuichiro Hatano, Shinya Fukuda, Hiroshi Makino, Hiroyuki Tomita, Ken-Ichirou Morishige, Akira Hara
BACKGROUND: Although p53 signature, benign-appearing epithelial cells with p53 diffuse expression, is frequently found in the fallopian tubes, the clinical and pathological significance of this lesion in the case of high-grade serous carcinoma (HGSC) patients still remains unclear. CASE PRESENTATION: A 56-year-old woman was referred to the gynecologist on account of abdominal distention. Since radiological and serological workup suggested that her illness was due to advanced ovarian cancer (FIGO Stage IVB), she received neoadjuvant chemotherapy, and the clinical evaluation of the chemotherapeutic response was a partial response...
April 27, 2018: Diagnostic Pathology
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