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Diagnostic Pathology

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https://www.readbyqxmd.com/read/29141672/a-novel-git2-braf-fusion-in-pilocytic-astrocytoma
#1
Jeffrey Helgager, Hart G Lidov, Navin R Mahadevan, Mark W Kieran, Keith L Ligon, Sanda Alexandrescu
BACKGROUND: KIAA1549-BRAF fusion is the most common genetic event in pilocytic astrocytoma (PA), and leads to activation of the mitogen activated protein kinase (MAPK) signaling pathway. Fusions of BRAF with other partner genes, as well as other genetic alterations not involving BRAF but also leading to MAPK pathway activation have been described rarely. CASE PRESENTATION: We present a new fusion partner in the low-grade glioma of a 10-year-old male, who presented with headaches and recent episodes of seizures...
November 15, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/29137657/p53-aberrations-in-low-grade-endometrioid-carcinoma-of-the-endometrium-with-nodal-metastases-possible-insights-on-pathogenesis-discerned-from-immunohistochemistry
#2
Oluwole Fadare, Vinita Parkash
BACKGROUND: TP53 mutations are rarely identified in low grade endometrioid carcinoma of the endometrium, and their pathogenic significance in such tumors is evidenced by the fact that TP53 aberrations have been associated with reduced recurrence-free survival in this subset of tumors. However, TP53 aberrations may not always represent a driving molecular event in a given endometrial cancer with a mutation. In this case study, the immunophenotype of a distinctive low grade endometrioid adenocarcinoma with an unusual pattern of lymph node metastases is used to explore the possible roles for underlying TP53-related molecular events in its pathogenesis...
November 14, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/29132399/automated-quantification-of-steatosis-agreement-with-stereological-point-counting
#3
André Homeyer, Patrik Nasr, Christiane Engel, Stergios Kechagias, Peter Lundberg, Mattias Ekstedt, Henning Kost, Nick Weiss, Tim Palmer, Horst Karl Hahn, Darren Treanor, Claes Lundström
BACKGROUND: Steatosis is routinely assessed histologically in clinical practice and research. Automated image analysis can reduce the effort of quantifying steatosis. Since reproducibility is essential for practical use, we have evaluated different analysis methods in terms of their agreement with stereological point counting (SPC) performed by a hepatologist. METHODS: The evaluation was based on a large and representative data set of 970 histological images from human patients with different liver diseases...
November 13, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/29126417/sclerosing-angiomatoid-nodular-transformation-of-the-spleen-in-a-patient-with-maffucci-syndrome-a-case-report-and-review-of-literature
#4
Xiao-Dan Huang, Hao-Sen Jiao, Zheng Yang, Chuang-Qi Chen, Yu-Long He, Xin-Hua Zhang
BACKGROUND: Maffucci syndrome is a congenital, non-hereditary mesodermal dysplasia characterized by multiple enchondromas and hemangiomas. The presence of visceral vascular lesions in this syndrome is exceedingly rare. CASE PRESENTATION: We report a 26-year-old female who was diagnosed with Maffucci syndrome along with sclerosing angiomatoid nodular transformation (SANT) of the spleen. The patient underwent a laparoscopic splenectomy. Immunostaining of the excised specimen revealed 3 distinct types of vessels in the angiomatoid nodules: CD34-/CD8-/CD31+ small veins, CD34-/CD8+/CD31+ sinusoids, and CD34+/CD8-/CD31+ capillaries, leading to the diagnosis of SANT of the spleen...
November 10, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/29116005/composite-intestinal-adenoma-microcarcinoid-in-the-colon-and-rectum-a-case-series-and-historical-review
#5
Mi-Jung Kim, Eun-Jung Lee, Do Sun Kim, Doo Han Lee, Eui Gon Youk, Hyun-Jung Kim
BACKGROUND: Composite intestinal adenoma-microcarcinoid (CIAM) is a rare colorectal lesion that mostly comprises a conventional adenomatous component with a minute proportion of neuroendocrine (NE) component. Although microcarcinoids are well-recognized in the setting of chronic inflammatory disorders of the gastrointestinal tract, large intestinal microcarcinoids associated with intestinal adenoma are exceedingly rare and their clinicopathologic characteristics are yet to be elucidated...
November 7, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/29096655/complete-mimicry-a-case-of-alveolar-rhabdomyosarcoma-masquerading-as-acute-leukemia
#6
Osamu Imataki, Makiko Uemura, Shumpei Uchida, Shigeyuki Yokokura, Akihiro Takeuchi, Ryo Ishikawa, Akihiro Kondo, Kayoko Seo, Norimitsu Kadowaki
BACKGROUND: A small number of rhabdomyosarcoma (RMS) cases involve the bone marrow. A leukemic presentation of RMS has been reported in a few case series, although almost all cases of leukemic RMS are not completely mimicking leukemia. We encountered a case with RMS cell infiltration of the bone marrow that resembled floating hematological cells. CASE PRESENTATION: We encountered a rare case of a 15-year-old boy with a 2-week history of left femoral pain. Upon admission, he was afebrile with no other symptoms...
November 2, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/29096639/renal-clear-cell-carcinoma-metastasis-to-the-breast-ten-years-after-nephrectomy-a-case-report-and-literature-review
#7
Yanjun Xu, Rui Hou, Qijie Lu, Yifan Deng, Bin Hu
BACKGROUND: Renal cell carcinoma most commonly metastasizes to the lungs, skeleton or liver. Metastatic renal cell carcinoma to the breast is very rare, especially for clear cell carcinoma, and few cases regarding this condition have been reported. CASE PRESENTATION: The case we presented was a 68-year-old Chinese female with metastatic renal clear cell carcinoma of the left breast 10 years after a nephrectomy. Identification of the metastatic renal clear cell carcinoma in the breast required multiple breast imaging modalities...
November 2, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/29041930/renal-cell-like-carcinoma-of-the-nasal-cavity-a-case-report-and-review-of-the-literature
#8
Zhenwei-Chen, Zhaoming-Wang, Hongqi-Shi, Qinwei-Liu
BACKGROUND: Sinonasal renal cell-like carcinoma (SRCLC) is an extremely rare low malignant tumor arising in the sinonasal tract, with histological mimicry of renal cell carcinoma. CASE PRESENTATION: We present a case of sinonasal renal cell-like carcinoma in a 63-year-old male patient. Computer tomography(CT) scanning revealed a soft tissue mass at the left nasal cavity and choana. Histologically, the predominant tumor architecture was follicular to glandular with intervening fibrous septa...
October 17, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/29037200/spontaneous-isolated-dissection-of-the-superior-mesenteric-artery-and-aneurysm-formation-resulting-from-segmental-arterial-mediolysis-a-case-report
#9
Nobuhiro Akuzawa, Makoto Kurabayashi, Tsukasa Suzuki, Daisuke Yoshinari, Mitsunobu Kobayashi, Yoshifumi Tanahashi, Fujio Makita, Ryusei Saito
BACKGROUND: Spontaneous isolated dissection of the superior mesenteric artery (SMA) can lead to bowel ischemia, aneurysm rupture, or even death. Studies have suggested that mechanical or hemodynamic stress on the vascular wall of the SMA may be a contributor, but its pathogenesis is unclear. CASE PRESENTATION: A 57-year-old Japanese man with a history of untreated hypertension and hyperuricemia was admitted to our hospital with the sudden onset of severe epigastric pain...
October 16, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/29017601/mass-like-dieulafoy-s-lesion-associated-with-advanced-gastric-cancer-at-the-antrum-of-stomach-a-case-report-and-literature-review
#10
Hsi-Lan Huang, Chi Yan Leung, Chien-Jui Cheng
BACKGROUND: Dieulafoy's lesion, also known as a caliber-persistent artery, is a shallow, small, and rare lesion that occurs along the lesser curvature of proximal stomach. It is rare for a Dieulafoy's lesion to present as a mass-like lesion that coexists with gastric cancer. To our best knowledge, we report the first case and histopathological pictures of a mass-like Dieulafoy's lesion coexisting with advanced gastric cancer in the antrum of the stomach. CASE PRESENTATION: A 57-year-old female presented with a 6-month history of intermittent epigastric dull pain and dyspepsia...
October 10, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28974264/pd-l1-and-pd-1-expression-are-correlated-with-distinctive-clinicopathological-features-in-papillary-thyroid-carcinoma
#11
Yanhua Bai, Dongfeng Niu, Xiaozheng Huang, Ling Jia, Qiang Kang, Fangyuan Dou, Xinqiang Ji, Weicheng Xue, Yiqiang Liu, Zhongwu Li, Qin Feng, Dongmei Lin, Kennichi Kakudo
BACKGROUND: Immune checkpoint blockade targeting PD-1/PD-L1 has shown efficacy in several types of cancers. However, the correlation between PD-L1/PD-1 expression and the specific clinicopathological features in papillary thyroid carcinoma (PTC) has not been investigated. METHODS: We examined the immunohistochemical expression of PD-L1, PD-1, and BRAF V600E on whole-tissue sections from 126 cases of primary PTC more than 1 cm in size. The correlation between the PD-L1/PD-1 expression and the clinicopathological features was evaluated...
October 3, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28974238/cmyc-expression-in-thyroid-follicular-cell-derived-carcinomas-a-role-in-thyroid-tumorigenesis
#12
Hany I Sakr, Deborah J Chute, Christian Nasr, Charles D Sturgis
BACKGROUND: cMYC regulates approximately 15% of human genes and is involved in up to 20% of all human cancers. Reports discussing cMYC protein expression in thyroid carcinomas are limited, with controversies pertaining to cMYC expression patterns noted in the literature. The aims of the current study were to clarify patterns and intensities of cMYC expression in follicular cell-derived thyroid carcinomas across a spectrum of cancer morphologies and disease aggressivities, to correlate cMYC with BRAF(V600E) expression, and to evaluate the potential role of cMYC in progression of well-differentiated thyroid carcinomas into less well-differentiated carcinomas...
October 3, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28946910/primary-paranasal-sinus-hyalinizing-clear-cell-carcinoma-a-case-report
#13
Batool M AlAli, Mohammed J Alyousef, Ahmad Salah Kamel, Mohammad A Al Hamad, Mohammad H Al-Bar, Roaa M Algowiez
BACKGROUND: Hyalinizing clear cell carcinoma (HCCC) is a rare low-grade tumour of salivary glands that was first described as a distinct entity in 1994 by Milchgrub et al. EWSR1-ATF1 fusion was found to be specific for this tumour. The majority of the reported cases of HCCC arise from minor salivary glands within the oral cavity. Primary HCCC of the paranasal sinus is extremely uncommon. To our knowledge, only three cases have been reported in the English literature. Herein, we present a case of HCCC of the posterior ethmoid/maxillary sinus...
September 25, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28923119/alk-positive-gastric-inflammatory-myofibroblastic-tumor-in-an-adult-with-familial-adenomatous-polyposis-and-diffuse-fundic-polyposis
#14
Jun Fan, Bo Huang, Xiuping Yang, Ming Yang, Jun He, Xiu Nie
BACKGROUND: Inflammatory myofibroblastic tumor (IMT) of the stomach is extremely rare in adults and exhibits a variable biological behavior that ranges from frequently benign lesions to more aggressive variants. Here we report a case of gastric IMT with lymph node metastasis in an adult who had undergone total colectomy for familial adenomatous polyposis (FAP). CASE PRESENTATION: A 37-year-old man presented gradual-onset epigastric discomfort; he had undergone total colectomy for FAP 6 years before...
September 18, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28923066/data-integration-from-pathology-slides-for-quantitative-imaging-of-multiple-cell-types-within-the-tumor-immune-cell-infiltrate
#15
Zhaoxuan Ma, Stephen L Shiao, Emi J Yoshida, Steven Swartwood, Fangjin Huang, Michael E Doche, Alice P Chung, Beatrice S Knudsen, Arkadiusz Gertych
BACKGROUND: Immune cell infiltrates (ICI) of tumors are scored by pathologists around tumor glands. To obtain a better understanding of the immune infiltrate, individual immune cell types, their activation states and location relative to tumor cells need to be determined. This process requires precise identification of the tumor area and enumeration of immune cell subtypes separately in the stroma and inside tumor nests. Such measurements can be accomplished by a multiplex format using immunohistochemistry (IHC)...
September 18, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28882151/retraction-note-astragalus-saponins-affect-proliferation-invasion-and-apoptosis-of-gastric-cancer-bgc-823-cells
#16
Tao Wang, Xiaoyan Xuan, Min Li, Ping Gao, Yuling Zheng, Wenqiao Zang, Guoqiang Zhao
No abstract text is available yet for this article.
September 7, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28851404/computer-assisted-stereology-and-automated-image-analysis-for-quantification-of-tumor-infiltrating-lymphocytes-in-colon-cancer
#17
Ann C Eriksen, Johnnie B Andersen, Martin Kristensson, René dePont Christensen, Torben F Hansen, Sanne Kjær-Frifeldt, Flemming B Sørensen
BACKGROUND: Precise prognostic and predictive variables allowing improved post-operative treatment stratification are missing in patients treated for stage II colon cancer (CC). Investigation of tumor infiltrating lymphocytes (TILs) may be rewarding, but the lack of a standardized analytic technique is a major concern. Manual stereological counting is considered the gold standard, but digital pathology with image analysis is preferred due to time efficiency. The purpose of this study was to compare manual stereological estimates of TILs with automatic counts obtained by image analysis, and at the same time investigate the heterogeneity of TILs...
August 29, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28851389/immunohistochemical-staining-with-non-phospho-%C3%AE-catenin-as-a-diagnostic-and-prognostic-tool-of-cox-2-inhibitor-therapy-for-patients-with-extra-peritoneal-desmoid-type-fibromatosis
#18
Tomohisa Sakai, Yoshihiro Nishida, Shunsuke Hamada, Hiroshi Koike, Kunihiro Ikuta, Takehiro Ota, Naoki Ishiguro
BACKGROUND: Immunohistochemical staining with conventional anti-β-catenin antibody has been applied as a diagnostic tool for desmoid-type fibromatosis (DF). This study aimed to evaluate the diagnostic and prognostic value of immunohistochemical staining with anti-non-phospho β-catenin antibody, which might more accurately reflect the aggressiveness of DF, in comparison to the conventional anti-β-catenin antibody. METHODS: Between 2003 and 2015, 40 patients with extra-peritoneal sporadic DF were prospectively treated with meloxicam or celecoxib, a COX-2 inhibitor, therapy...
August 29, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28841919/mesonephric-adenocarcinoma-of-the-uterine-corpus-with-intracystic-growth-completely-confined-to-the-myometrium-a-case-report-and-literature-review
#19
Hiroka Ando, Yuko Watanabe, Minori Ogawa, Hiromi Tamura, Tomomi Deguchi, Kayo Ikeda, Mayumi Fujitani, Mitsunori Shioji, Tomoko Tsujie, Reiko Doi, Akinori Wakimoto, Shiro Adachi
BACKGROUND: Mesonephric adenocarcinoma (MA) is a rare tumor believed to arise from mesonephric remnants occurring mostly in the uterine cervix and, to a lesser extent, the corpus. Since the first case report of MA in the corpus in 1995, only 16 cases have been reported in the English literature. A recent report suggested that MA originates in Müllerian tissue and exhibits the mesonephric differentiation phenotype. CASE PRESENTATION: An asymptomatic 61-year-old woman was referred to our hospital because of elevated levels of tumor markers...
August 25, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28841887/a-case-of-intravascular-large-b-cell-lymphoma-presenting-as-nodular-goiter
#20
Bo Luo, Jia-Mei Chen, Jie Liu, Wen-He Li, Yu-Xiang Shi, Pan Zeng, Yong-Hui Xie, Hong-Feng Zhang
BACKGROUND: Intravascular large B-cell lymphoma (IVLBCL) is a subtype of diffuse large B-cell lymphoma (DLBCL) that is rare and highly aggressive and that may progressively involve many organs. CNS (central nervous system), BM (bone marrow) and skin are the most common systems involved. To date, only 2 cases of IVLBCL involving the thyroid have been reported. CASE PRESENTATION: Here, we report a case of IVLBCL involving the thyroid and accompanied by bilateral nodular goiter...
August 25, 2017: Diagnostic Pathology
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