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American Journal of Surgical Pathology

Friedrich Kommoss, Asma Faruqi, C Blake Gilks, Sarah Lamshang Leen, Naveena Singh, Nafisa Wilkinson, W Glenn McCluggage
We investigated the frequency, histopathologic, and immunohistochemical characteristics of tubal involvement in uterine serous carcinoma (USC) and aimed to clarify the relationship between "serous tubal intraepithelial carcinoma (STIC)" and USC in these cases. Cases of USC with complete tubal examination were prospectively collected and reviewed for the presence of tubal involvement. Immunohistochemical analysis for p53 and WT1 was performed on the endometrial and tubal tumor in cases with tubal involvement...
October 21, 2016: American Journal of Surgical Pathology
Abbas Agaimy, Matthias Bieg, Michael Michal, Helene Geddert, Bruno Märkl, Jan Seitz, Evgeny A Moskalev, Matthias Schlesner, Markus Metzler, Arndt Hartmann, Stefan Wiemann, Michal Michal, Thomas Mentzel, Florian Haller
Infantile myofibroma (MF) is an uncommon benign myofibroblastic tumor of infancy and childhood. Solitary adult MF shares similar features with infantile MF. The lesions occur in 3 clinicopathologic settings: solitary, multicentric, and generalized and can be either sporadic or familial. Traditionally, infantile MF has been included in the spectrum of infantile hemangiopericytoma. The recent World Health Organization classification listed MF, angioleiomyoma, and myopericytoma under the general heading of perivascular tumors in the sense of a morphologic spectrum of perivascular myoid cell neoplasms...
October 21, 2016: American Journal of Surgical Pathology
Zhihong Hu, L Jeffrey Medeiros, Zi Chen, Weina Chen, Shaoying Li, Sergej N Konoplev, Xinyan Lu, Lan V Pham, Ken H Young, Wei Wang, Shimin Hu
MYC rearrangement in mantle cell lymphoma (MCL) is rare, and its clinicopathologic significance is not well defined. We report 17 cases of MCL with 8q24/MYC rearrangement, detected at the time of initial diagnosis of MCL in 10 patients and subsequently during the clinical course in 7 patients. There were 12 men and 5 women with a median age of 61 years (range, 49 to 81 y). Fourteen patients had lymphadenopathy (Ann Arbor stage III/IV), and 3 patients presented with a leukemic pattern without lymphadenopathy...
October 21, 2016: American Journal of Surgical Pathology
Pierre Russo, John C Magee, Robert A Anders, Kevin E Bove, Catherine Chung, Oscar W Cummings, Milton J Finegold, Laura S Finn, Grace E Kim, Mark A Lovell, Margret S Magid, Hector Melin-Aldana, Sarangarajan Ranganathan, Bahig M Shehata, Larry L Wang, Frances V White, Zhen Chen, Catherine Spino
The liver biopsy guides diagnostic investigation and therapy in infants with undiagnosed cholestasis. Histologic features in the liver may also have prognostic value in the patient with biliary atresia (BA). We assessed the relative value of histologic features in 227 liver needle biopsies in discriminating between BA and other cholestatic disorders in infants enrolled in a prospective Childhood Liver Disease Research Network (ChiLDReN) cohort study by correlating histology with clinical findings in infants with and without BA...
October 21, 2016: American Journal of Surgical Pathology
Sapna M Amin, Alexandra M Haugh, Christina Y Lee, Bin Zhang, Jeffrey A Bubley, Emily A Merkel, Anna Elisa Verzì, Pedram Gerami
Recent studies have identified translocations involving the kinase domains of ALK, NTRK1, BRAF, RET, and ROS in spitzoid neoplasms. Subsequent studies have also characterized morphologic features corresponding to ALK and NTRK1 translocations. In this study, we sought to further compare morphologic features across a range of 49 genetically defined spitzoid neoplasms with ALK, NTRK1, BRAF, or RET fusions to determine discriminating features. We also compared them with a group of 22 spitzoid neoplasms, which were confirmed to be negative for fusions in ALK, NTRK1, BRAF, and RET...
October 21, 2016: American Journal of Surgical Pathology
Mariko Yabe, L Jeffrey Medeiros, Sa A Wang, Guilin Tang, Carlos E Bueso-Ramos, Jeffrey L Jorgensen, Govind Bhagat, Weina Chen, Shaoying Li, Ken H Young, Roberto N Miranda
Hepatosplenic T-cell lymphoma (HSTCL) is a rare, aggressive T-cell lymphoma that can be challenging to diagnose. In particular, distinguishing HSTCL from T-cell large granular lymphocytic (T-LGL) leukemia of γδ T-cell receptor (TCR) type is difficult without examination of a splenectomy specimen. In this study, we systematically assessed a series of HSTCL cases for findings reported in the literature as supporting or not supporting the diagnosis of HSTCL. We also compared HSTCL with a group of cases of T-LGL of γδ TCR type...
October 13, 2016: American Journal of Surgical Pathology
Máire A Duggan, William F Anderson, Sean Altekruse, Lynne Penberthy, Mark E Sherman
The Surveillance, Epidemiology, and End Results (SEER) program of the National Cancer Institute collects data on cancer diagnoses, treatment, and survival for approximately 30% of the United States (US) population. To reflect advances in research and oncology practice, approaches to cancer control are evolving from simply enumerating the development of cancers by organ site in populations to including monitoring of cancer occurrence by histopathologic and molecular subtype, as defined by driver mutations and other alterations...
October 12, 2016: American Journal of Surgical Pathology
Zenggang Pan, Shimin Hu, Min Li, Yi Zhou, Young S Kim, Vishnu Reddy, Jennifer N Sanmann, Lynette M Smith, Mingyi Chen, Zifen Gao, Huan-You Wang, Ji Yuan
Anaplastic lymphoma kinase-positive large B-cell lymphoma (ALK LBCL) is a rare, aggressive subtype of diffuse large B-cell lymphoma with characteristic ALK rearrangements. Diagnosis of ALK LBCL can be challenging because of its rarity, unique morphologic characteristics, and unusual immunophenotypic features, which significantly overlap with other hematologic and nonhematologic neoplasms. The purpose of this study is to further explore the clinicopathologic features of ALK LBCL to ensure the awareness and accurate diagnosis of this entity...
October 12, 2016: American Journal of Surgical Pathology
Amy S Joehlin-Price, Kelsey E McHugh, Julie A Stephens, Zaibo Li, Floor J Backes, David E Cohn, David W Cohen, Adrian A Suarez
MELF invasion has been associated with nonvaginal recurrences and lymph node (LN) metastases in multi-institutional case control studies but has not been well examined in large single-institution cohorts. Hysterectomy specimens with FIGO 1 endometrioid endometrial carcinoma and lymphadenectomies from 2007 to 2012 were identified. Electronic medical records and histologic slides were reviewed. Of 464 identified cases, 163 (35.1%) were noninvasive, 60 (12.9%) had MELF, 222 (47.8%) had a component of the infiltrative invasion pattern without MELF, 13 (2...
October 12, 2016: American Journal of Surgical Pathology
Kyuichi Kadota, Camelia S Sima, Maria E Arcila, Cyrus Hedvat, Mark G Kris, David R Jones, Prasad S Adusumilli, William D Travis
The potential clinical impact of KRAS and epidermal growth factor receptor (EGFR) mutations has been investigated in lung adenocarcinomas; however, their prognostic value remains controversial. In our study, we sought to investigate the prognostic significance of driver mutations using a large cohort of early-stage lung adenocarcinomas. We reviewed patients with pathologic early-stage, lymph node-negative, solitary lung adenocarcinoma who had undergone surgical resection (1995 to 2005; stage I/II=463/19). Tumors were classified according to the IASLC/ATS/ERS classification and genotyped by Sequenom MassARRAY system and polymerase chain reaction-based assays...
October 12, 2016: American Journal of Surgical Pathology
Alyssa M Krasinskas, Gerard J Oakley, Pelin Bagci, Kee-Taek Jang, Shih-Fan Kuan, Michelle D Reid, Ipek Erbarut, Volkan Adsay
Pancreatic cysts >1 cm lined by nonpapillary mucinous epithelium without ovarian-type stroma pose diagnostic challenges. The term "simple mucinous cyst" was recently proposed for this entity. Our goal was to determine the clinicopathologic characteristics of these cysts, as they have not been previously described. Of the 39 patients with pancreatic resections included in this study, the mean age was 65 years and the female-to-male ratio was 4:1. The characteristics of the cysts are as follows: 82% had elevated cyst fluid carcinoembryonic antigen levels, 67% were unilocular, 69% occurred in the body/tail, 92% did not communicate with pancreatic ducts, the mean size was 2...
October 12, 2016: American Journal of Surgical Pathology
Cynthia R Fata, Raul S Gonzalez, Eric Liu, Justin M Cates, Chanjuan Shi
Mesenteric tumor deposits (MTDs) are not included in the American Joint Committee on Cancer (AJCC) staging system for midgut small intestinal neuroendocrine tumors (NETs). We examined the prognostic significance of MTDs associated with midgut NETs. Hematoxylin and eosin slides from 132 resected jejunal/ileal NETs were reviewed for AJCC tumor stage, lymph node (LN) metastasis, MTDs, and hepatic metastases. MTDs were defined as discrete irregular mesenteric tumor nodules discontinuous from the primary tumor. Clinical or pathologic evidence of metastases and survival data were abstracted from electronic medical records...
September 28, 2016: American Journal of Surgical Pathology
Uwe Hillen, Florian Grabellus, Cindy Franklin, Antje Sucker, Dirk Schadendorf, Bastian Schilling
No abstract text is available yet for this article.
September 27, 2016: American Journal of Surgical Pathology
Anne M Mills, Cherie Paquette, Tatjana Terzic, Philip E Castle, Mark H Stoler
Cervical high-grade squamous intraepithelial lesion (CIN2-3) is thought to arise from a distinct population of cells at the squamocolumnar junction (SCJ). Immunohistochemical (IHC) biomarkers that characterize the SCJ phenotype, including CK7, have been proposed as tools to separate the subset of low-grade squamous intraepithelial lesions (LSILs) (CIN1) that will progress to high-grade squamous intraepithelial lesion from the majority of cases, which will resolve without further intervention. We conducted a retrospective study of CK7 IHC on adjudicated CIN1 tissue from women in the placebo arm of the quadrivalent human papillomavirus (HPV) vaccine trials...
September 27, 2016: American Journal of Surgical Pathology
Jerome B Taxy, William E Gibson, Michael W Kaufman
Echinococcus is the smallest of the major tapeworms. Humans are incidental hosts who become infected by exposure to soil contaminated with ova from the feces of the canine definitive hosts. The major species are E. granulosus (cystic echinococcosis) and E. multilocularis (alveolar or sylvatic echinococcosis), both common worldwide but unusual and not reportable in the United States. Human disease is characterized by slowly growing visceral cystic masses often containing daughter cysts and hydatid sand. In nonendemic areas, the clinical evaluation includes imaging, serology, and surgery; metastatic tumor is a major consideration...
September 26, 2016: American Journal of Surgical Pathology
Kristen Zhelnin, Yue Xue, Brian Quigley, Michelle D Reid, Hyejeong Choi, Bahar Memis, Volkan Adsay, Alyssa M Krasinskas
Mucinous cystic neoplasms (MCNs) can occur in the pancreas and liver. Classically, these cystic lesions are lined by columnar mucinous epithelium with underlying ovarian-type stroma. It has been proposed that cysts with ovarian-type stroma and nonmucinous epithelium be considered separate entities in both the pancreas and liver. Using a series of 104 pancreatic and 32 hepatic cases, we aimed to further characterize the epithelium present in MCNs. Mucinous epithelium was defined as pancreatic intraepithelial neoplasia-like columnar cells with pale pink/clear apical mucin...
September 26, 2016: American Journal of Surgical Pathology
Manila Antonelli, Alessandro Raso, Samantha Mascelli, Marco Gessi, Paolo Nozza, Antonella Coli, Marina P Gardiman, Antonietta Arcella, Maura Massimino, Francesca R Buttarelli, Felice Giangaspero
Chordomas arise in the skull base and spine and usually occur in adults and are rare in the pediatric population. Cases of chordoma in pediatric age are often poorly differentiated, showing cytologic atypia, increased cellularity, and mitosis, and their aggressive behavior is associated with a high incidence of metastatic spread and a short patient survival. Recent studies have described loss of SMARCB1/INI1 protein in poorly differentiated chordomas associated not with point mutations but with SMARCB1/INI1 gene deletions instead...
September 15, 2016: American Journal of Surgical Pathology
Jessica Reagh, Martyn Bullock, Juliana Andrici, John Turchini, Loretta Sioson, Adele Clarkson, Nicole Watson, Amy Sheen, Grace Lim, Leigh Delbridge, Stan Sidhu, Mark Sywak, Ahmad Aniss, Phillip Shepherd, Daniel Ng, Paul Oei, Michael Field, Diana Learoyd, Bruce G Robinson, Roderick J Clifton-Bligh, Anthony J Gill
A quarter of patients with medullary thyroid carcinoma (MTC) have germline mutations in the RET proto-oncogene indicating MEN2. Therefore genetic testing is recommended for all patients presenting with MTC. Approximately 40% of MTCs have somatic RET mutations. Somatic mutations in the RAS genes are the next most common driver mutations and appear to be mutually exclusive with germline RET mutation. The single most common somatic RAS mutation is HRASQ61R (c.182A>G), reported in 4.6% to 11% of all MTCs. Mutation-specific immunohistochemistry (IHC) initially developed to identify the NRASQ61R mutation in melanoma (clone SP174) has proven highly sensitive and specific...
September 15, 2016: American Journal of Surgical Pathology
Mana Fukushima, Inga-Marie Schaefer, Christopher D M Fletcher
Myolipoma of soft tissue, which was first described by Meis and Enzinger (1991), is a rare benign neoplasm characterized by the admixture of mature adipocytes and well-differentiated smooth muscle cells. Recently, cytogenetic alteration of the HMGA2 gene has been reported in 2 myolipomas. We present the clinicopathologic features of 34 cases of myolipoma of soft tissue, study immunoreactivity for HMGA2, and review the previous literature. In our series, there were 32 women and 2 men, with age at presentation ranging from 35 to 94 years (median, 55 y)...
September 15, 2016: American Journal of Surgical Pathology
Anna Caliò, Kathleen A Warfel, John N Eble
Renomedullary interstitial cell tumors are common incidental findings in kidney specimens. Despite their frequency, little is known about their morphology and pathogenesis. Kidneys from 402 unselected autopsies were sectioned at 1 to 2 mm intervals, and all lesions were examined histologically. A total of 421 renomedullary interstitial cell tumors were present in 150 patients (37%), ranging from 1 to 23 tumors per patient (mean=3). There was no statistically significant difference in age, sex, hypertension, heart weight, tobacco smoking, diabetes mellitus, and renal function between patients with renomedullary interstitial cell tumors and those without...
September 15, 2016: American Journal of Surgical Pathology
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