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International Journal of Surgical Pathology

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https://www.readbyqxmd.com/read/29466906/melanin-bleaching-with-warm-hydrogen-peroxide-and-integrated-immunohistochemical-analysis-an-automated-platform
#1
Chia-Hsing Liu, Chih-Hung Lin, Min-Jan Tsai, Yu-Hsuan Chen, Sheau-Fang Yang, Kun-Bow Tsai
OBJECTIVE: Diagnosing melanocytic lesions is among the most challenging problems in the practice of pathology. The difficulty of physically masking melanin pigment and the similarity of its color to commonly used chromogens often complicate examination of the cytomorphology and immunohistochemical staining results for tumor cells. Melanin bleach can be very helpful for histopathological diagnosis of heavily pigmented melanocytic lesions. Although various depigmentation methods have been reported, no standardized methods have been developed...
February 1, 2018: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29464972/malignant-transformation-arising-within-unusual-and-rare-hepatic-lesions-fibropolycystic-disease-form-of-ductal-plate-malformation-and-biliary-fibroadenoma
#2
Darren Chua, Adrian Kah Heng Chiow, Tiing Leong Ang, Lai Mun Wang
Cholangiocarcinoma is the second most common hepatobiliary cancer following hepatocellular carcinoma, and 20% to 25% are intrahepatic. We describe 2 cases of intrahepatic cholangiocarcinoma arising within unusual and rare hepatic lesions, fibropolycystic liver disease form of ductal plate malformation and biliary adenofibroma, whose association with malignancy is rarely reported in the literature.
February 1, 2018: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29464971/inflammatory-nodules-identify-steroid-responsive-primary-sclerosing-cholangitis
#3
Jonathan H Chen, Vikram Deshpande
Primary sclerosing cholangitis (PSC) is a cholangiopathy-usually associated with inflammatory bowel disease-that leads to cirrhosis and liver failure. Based on a multitude of clinical trials, there is general consensus that PSC progression is unchanged by current therapies, including steroids. However, there are scattered reports in the literature of PSC patients responsive to steroids. Recently, several steroid-responsive PSC mimics have been described, most notably immunoglobulin G4-related sclerosing cholangitis...
February 1, 2018: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29444594/placental-tissue-in-colon-and-liver
#4
Maria Cecilia Mengoli, Magda Zanelli, Maurizio Zizzo, Alessandro Giunta, Lillo Bruno Cerami, Alberto Cavazza, Maria Chiara Mengoli, Loredana De Marco
No abstract text is available yet for this article.
February 1, 2018: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29411669/ck7-ck20-double-negative-pulmonary-enteric-adenocarcinoma-with-histopathological-evaluation-of-transformation-zone-between-enteric-adenocarcinoma-and-conventional-pulmonary-adenocarcinoma
#5
Masashi Miyaoka, Kazuhito Hatanaka, Masayuki Iwazaki, Naoya Nakamura
We report a rare case of pulmonary enteric adenocarcinoma (PEA) exhibiting a immunohistochemical feature of CK7/CK20 double-negativity by evaluating the transformation zone between PEA and conventional pulmonary adenocarcinoma (CPA). A 75-year-old man was found to have a mass, 40 mm in diameter, in the right lower lobe on chest computed tomography, and underwent right lower lobectomy. Histologically, the tumor was composed of a PEA and CPA component. The dominant PEA component had medium to large complex glands with tall columnar cells with eosinophilic cytoplasm and brush-border...
February 1, 2018: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29390930/blue-beads-on-the-duodenal-surface-cause-of-diarrhea-in-a-renal-transplant-recipient
#6
Irneet Mundi, Ritu Pankaj, Geetanjali Grover, Mohinish Chhabra
No abstract text is available yet for this article.
January 1, 2018: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29390927/malignant-ewing-like-neoplasm-with-an-ewsr1-klf15-fusion-at-the-crossroads-of-a-myoepithelial-carcinoma-and-a-ewing-like-sarcoma-a-case-report-with-treatment-options
#7
Todd M Stevens, Morad Qarmali, Diana Morlote, Fady M Mikhail, Jeffrey Swensen, Zoran Gatalica, Gene P Siegal, Robert M Conry
We present a case of a malignant Ewing-like neoplasm of the parotid gland in a 20-year-old woman with an EWSR1-KLF15 gene fusion that presented with pulmonary metastasis. Despite the fact that the tumor was essentially immunohistochemically negative for keratins, p63, and p40, we interpret this neoplasm as an unusual form of a high-grade myoepithelial carcinoma based on its focal plasmacytoid cytology, chondromyxoid matrix, SOX10, S100 protein, and calponin expression, and the knowledge that the EWSR1-KLF15 gene fusion has, to date, only been identified in 2 tumors, both myoepithelial carcinomas of the kidney...
January 1, 2018: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29390920/utility-of-additional-tissue-sections-in-surgical-pathology
#8
Ameer Hamza, Ahmed Alrajjal, Jacob Edens, Sidrah Khawar, Muhammad Siddique Khurram, Susanna Szpunar, Michelle Bonnett
BACKGROUND: To avoid diagnostic errors such as missed diagnosis and errors in staging tumors due to inadequate tissue sampling, pathologists submit additional sections (AS). OBJECTIVE: This study assessed frequency, diagnostic yield, distribution, and cost of AS. METHOD: Among 1542 AS cases, we calculated mean AS per case; fraction of AS that altered diagnosis or stage; AS variation by tissue, malignant versus benign lesions, presence or absence of neoadjuvant therapy, mass, margin, lymph nodes, or other source, resident versus pathologist assistant (PA) dissector; and AS cost per case...
January 1, 2018: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29366363/orbital-granulomatosis-with-polyangiitis-mimicking-igg4-related-disease-in-a-12-year-old-male
#9
Anastasia Drobysheva, Julie Fuller, Cory M Pfeifer, Dinesh Rakheja
Granulomatosis with polyangiitis is rare in children. We report a case of a 12-year-old male who presented with new symptoms of left eyelid swelling and ptosis. Magnetic resonance imaging showed an enhancing orbital mass suspicious for a neoplasm. Excisional biopsy was performed. Microscopic examination revealed fibrovascular tissue with dense collagenous fibrosis and mixed inflammatory infiltrate that included many plasma cells. Many small and medium-sized blood vessels showed granulomatous and necrotizing vasculitis with disruption of the vessel walls and fibrinoid necrosis...
January 1, 2018: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29361862/poorly-differentiated-neuroendocrine-carcinoma-of-the-sigmoid-tract-in-long-standing-ulcerative-colitis-report-of-a-case-and-review-of-the-literature
#10
Elena Bolzacchini, Claudio Chini, Claudio Camillo Cortelezzi, Ilaria Vallini, Graziella Pinotti, Stefano La Rosa, Silvia Uccella
A 37-year-old male with long-standing and extensive ulcerative pancolitis developed a rapidly lethal poorly differentiated neuroendocrine carcinoma (NEC) in the sigmoid colon. Prior biopsies obtained from multiple sites of the colon during endoscopic surveillance showed minimal inflammatory changes and no sign of dysplasia. Patients with inflammatory bowel disease (IBD) are at increased risk of colorectal malignancies, and adenocarcinoma is the most common type of colorectal neoplasm associated with ulcerative colitis and Crohn's disease, but other types of epithelial and nonepithelial tumors have also been described in IBD...
January 1, 2018: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29338553/comprehensive-clinicopathologic-and-updated-immunohistochemical-characterization-of-primary-ovarian-mucinous-carcinoma
#11
Dina Bassiouny, Nadia Ismiil, Valerie Dubé, Guangming Han, Matthew Cesari, Fang-I Lu, Elzbieta Slodkowska, Carlos Parra-Herran, Hak Fai Chiu, Magda Naeim, Nim Li, Mahmoud Khalifa, Sharon Nofech-Mozes
The distinction of primary mucinous ovarian carcinoma (PMOC) from other primaries or secondaries is essential for selecting therapeutic options and prognostication. We aimed to characterize the immunohistochemical profile of 36 PMOCs using an extended immunohistochemical panel, with clinicopathologic features and outcome. PAX8 was negative in 30 (83.3%), and SATB2 was negative in 32/35. HNF1B, AMACR, and napsin-A were detected in 33 (91.7%), 35 (97.2%), and 0 (0%), respectively. MMR proteins and ARID1A were retained in 100%; PTEN was lost in 4 (11...
January 1, 2018: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29336186/subcutaneous-fat-necrosis-of-newborn-unfamiliar-histomorphology-of-a-familiar-lesion
#12
Vani Bharani, Nandita Kakkar, Vidushi Mahajan, Chandrika Azad
No abstract text is available yet for this article.
January 1, 2018: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29336183/postradiation-synovial-sarcoma-of-the-common-bile-duct-a-previously-unreported-anatomic-site
#13
Roberto Herrera-Goepfert
Synovial sarcoma is a ubiquitous neoplasm predominantly affecting soft tissues of young adults of any gender; few cases have been described in the digestive system, mostly in the stomach. The (X;18)(p11.2; q11.2) translocation yields unique SS18-SSX fusion genes. Synovial sarcoma has been related to radiotherapy, but no synovial sarcoma has been associated with the digestive system. This article describes the case of a synovial sarcoma arising along the extrahepatic biliary tree, 10 years after the application of an abdominal radiotherapy schedule due to a retroperitoneal metastatic seminoma in a male who developed progressive obstructive jaundice...
January 1, 2018: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29325463/compared-with-elastin-stains-h-caldesmon-and-desmin-offer-superior-detection-of-vessel-invasion-in-gastric-pancreatic-and-colorectal-adenocarcinomas
#14
Özgür Ekinci, Betül Öğüt, Bülent Çelik, Ayşe Dursun
BACKGROUND: The presence of vessel invasion is considered indicative of a poor prognosis in many malignant tumors. We aimed to compare the sensitivity of elastin stains (van Gieson's and orcein methods) with 2 smooth muscle markers (h-caldesmon and desmin) in gastric, pancreatic, and colorectal adenocarcinoma specimens. MATERIALS AND METHODS: We used 27 (29.3%) gastric, 35 (38.0%) pancreatic, and 30 (32.6%) colorectal resection specimens. We applied a provisional classification of vessel invasion patterns: type A, a focus with a nearby artery unaccompanied by a vein; type T, a focus at the invasive front without an unaccompanied artery; and type X, foci that only appeared by any of the 4 stains used...
January 1, 2018: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29320898/did-i-miss-it-discovering-hidden-coexisting-hematological-neoplasms-a-single-institutional-review-of-100-collision-tumors
#15
Evan Himchak, Etan Marks, Yang Shi, Yanhua Wang
A collision tumor is defined as two histologically distinct tumor types identified at the same anatomic site. Hematolymphoid proliferative disorders (HLPDs), which coincide with non-hematological neoplasms, can mimic an immune response and can easily be overlooked as an immune reaction to a solid organ neoplasm, especially when low grade. In order to avoid a delay in the diagnosis of a HLPD during the workup for a non-hematological neoplasm, we identified a cohort of 100 cases with a HLPD diagnosis during the initial workup and treatment of a non-hematological neoplasm, or vice versa...
January 1, 2018: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29295663/ros1-rearrangement-in-a-case-of-classic-biphasic-pulmonary-blastoma
#16
Taylor M Jenkins, Jennifer J D Morrissette, John C Kucharczuk, Charuhas G Deshpande
Classic biphasic pulmonary blastoma (CBPB) is a rare and aggressive type of non-small cell lung carcinoma (NSCLC) presenting in adults in the fourth to fifth decade. The prognosis is poor and after surgical resection, therapeutic options are often limited. ROS1 is a proto-oncogene receptor tyrosine kinase that has been identified in some types of NSCLC. We report a case of a 36-year-old woman with CBPB, which was subsequently found to have a ROS1 rearrangement. This is the first reported case of a ROS1-rearranged CBPB...
December 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29295660/simultaneous-mature-cystic-teratoma-and-hydatid-cyst-in-a-young-female-an-unusual-coincidence
#17
Rajesh Kumar, Rasmi Joshi, Manish Rohilla, Vanita Jain
No abstract text is available yet for this article.
December 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29281925/gastric-type-endometrial-adenocarcinoma-report-of-two-cases-in-patients-from-the-united-states
#18
Whitney A McCarthy, Reeva Makhijani, Katherine Miller, Kristin Rojas, Lindsey Beffa, Cara Mathews, Katina Robison, M Ruhul Quddus
Gastric-type adenocarcinomas of the uterine cervix have been described within the literature in detail; however, the description of gastric-type endometrial adenocarcinomas is a recent development, with only two cases originating from Japan in the world literature to date. According to these prior reports, the recognition of this pattern of differentiation is critical, as it is often associated with deep myoinvasion, positive regional lymph nodes, and poor outcome despite appropriate adjuvant treatment. We present two cases of endometrial adenocarcinoma with gastric-type differentiation in patients from the United States with superficial myoinvasion and positive patient outcomes...
December 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29279032/multiple-myeloma-with-multilobated-plasma-cells-an-unusual-and-challenging-morphological-variant
#19
Magda Zanelli, Maria Cecilia Mengoli, Daniela Fanni, Elisabetta Froio, Loredana De Marco, Stefano Ascani
No abstract text is available yet for this article.
December 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29278974/abdominal-angiostrongyliasis-a-presentation-of-eosinophilic-granulomatous-colitis
#20
Timothy Walls, Dominick Cavuoti, Nandini Channabasappa, Mary Yang, Paul Southern, Michelle A Gill, Jason Y Park
We present a case of a 4-year-old girl with abdominal angiostrongyliasis who presented with persistent fevers, hepatosplenomegaly, acute abdominal pain, and eosinophilia. Computed tomography scan identified thickening of the ascending colon with a narrowed lumen. Endoscopic evaluation revealed ulcerations and erythema in the ascending colon. The microscopic findings in biopsies included active chronic inflammation with prominent eosinophils and granulomas. A subset of granulomas contained the eggs of Angiostrongylus costaricensis...
December 1, 2017: International Journal of Surgical Pathology
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