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American Journal of Surgical Pathology

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https://www.readbyqxmd.com/read/28418995/kidney-biopsy-yield-an-examination-of-influencing-factors
#1
Miroslav Sekulic, Gretchen S Crary
Kidney biopsies are conducted under varying scenarios, presenting variables that could potentially influence yield and adequacy of tissue collected. We retrospectively reviewed 636 native and allograft kidney biopsies, and compared tissue collected between differing practitioners performing the biopsy (nephrologists or radiologists), imaging modalities for guidance (ultrasound or computed tomography), gauge needle used (18 or 16 G), and between on-site evaluators of biopsy adequacy conducted at the time of biopsy (general pathologists, renal pathologists, nephrologists)...
April 17, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28418994/clinicopathologic-association-and-prognostic-value-of-microcystic-elongated-and-fragmented-melf-pattern-in-endometrial-endometrioid-carcinoma
#2
Atsushi Kihara, Hiroshi Yoshida, Reiko Watanabe, Kenta Takahashi, Tomoyasu Kato, Yoshinori Ino, Masanobu Kitagawa, Nobuyoshi Hiraoka
Microcystic, elongated, and fragmented (MELF) pattern is seen in the invasive front of some endometrial endometrioid carcinomas. Although MELF pattern can be expected as an indicator of patient outcomes, its prognostic significance remains unclear. This study was conducted to elucidate clinicopathologic features and the prognostic impact of MELF pattern in patients with endometrial endometrioid carcinoma. We retrospectively analyzed data of 479 consecutive patients with endometrial endometrioid carcinoma that had been surgically resected...
April 17, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28418993/solid-papillary-breast-carcinomas-resembling-the-tall-cell-variant-of-papillary-thyroid-neoplasms-a-unique-invasive-tumor-with-indolent-behavior
#3
Maria P Foschini, Sofia Asioli, Susan Foreid, Gabor Cserni, Ian O Ellis, Vincenzo Eusebi, Juan Rosai
Thirteen cases of invasive solid papillary breast carcinomas resembling the tall cell variant of papillary thyroid neoplasms (BPTC) are reported here. Some cases had long-term follow-up. BPTC is a special type of primary breast neoplasm showing a triple-negative profile but low aggressive potential. Knowledge on BPTC is still scanty; therefore, the aim of the present paper was to report on the features of an additional 13 cases. All the patients were female individuals, and the mean age at presentation was 62...
April 17, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28394803/hpv-negative-gastric-type-adenocarcinoma-in-situ-of-the-cervix-a-spectrum-of-rare-lesions-exhibiting-gastric-and-intestinal-differentiation
#4
Karen L Talia, Colin J R Stewart, Brooke E Howitt, Marisa R Nucci, W Glenn McCluggage
In recent years, a number of benign and malignant cervical glandular lesions exhibiting gastric differentiation have been described but premalignant gastric-type lesions have not been well characterized. We report a series of 9 cases of a rare form of cervical adenocarcinoma in situ (AIS) distinguished by gastric and sometimes intestinal differentiation and lack of association with human papillomavirus (HPV) infection. The lesions occurred in women aged 25 to 73 years (mean age 51 y). All cases were located at (or just proximal to) the cervical transformation zone and there was extension to the lower uterine segment in 3 cases, 2 of which also involved the endometrium...
April 7, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28394802/identification-of-dab2-and-intelectin-1-as-novel-positive-immunohistochemical-markers-of-epithelioid-mesothelioma-by-transcriptome-microarray-analysis-for-its-differentiation-from-pulmonary-adenocarcinoma
#5
Masatsugu Kuraoka, Vishwa J Amatya, Kei Kushitani, Amany S Mawas, Yoshihiro Miyata, Morihito Okada, Takumi Kishimoto, Kouki Inai, Takashi Nishisaka, Taijiro Sueda, Yukio Takeshima
As there are currently no absolute immunohistochemical positive markers for the definite diagnosis of malignant epithelioid mesothelioma, the identification of additional "positive" markers that may facilitate this diagnosis becomes of clinical importance. Therefore, the aim of this study was to identify novel positive markers of malignant mesothelioma. Whole genome gene expression analysis was performed using RNA extracted from formalin-fixed paraffin-embedded tissue sections of epithelioid mesothelioma and pulmonary adenocarcinoma...
April 7, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28368927/heterotopic-pancreas-of-the-gastrointestinal-tract-and-associated-precursor-and-cancerous-lesions-systematic-pathologic-studies-of-165-cases
#6
Sun-Young Jun, Dahye Son, Mi-Ju Kim, Sung Joo Kim, Soyeon An, Young Soo Park, Sook Ryun Park, Kee Don Choi, Hwoon-Yong Jung, Song Cheol Kim, Jeong Hwan Yook, Byung-Sik Kim, Seung-Mo Hong
Heterotopic pancreas (HP) can be detected by accompanying symptoms or incidentally during gastrointestinal (GI) tract tumor resection. We compared clinicopathologic features among 165 resected HPs (57 gastric [35%], 56 duodenal [34%], 30 omental [18%], and 22 jejunal [13%]). Symptomatic HPs (79/135 GI tract wall HPs, 59%) were larger (P=0.05), more common in younger patients and in a gastric location (both P<0.001), and more frequently associated with lymphoid cuffs (P=0.03) than incidentally found HPs. Gastric/jejunal HPs were more frequently symptomatic (P<0...
March 31, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28368926/basal-cell-carcinoma-with-matrical-differentiation-clinicopathologic-immunohistochemical-and-molecular-biological-study-of-22-cases
#7
Liubov Kyrpychova, Richard A Carr, Petr Martinek, Tomas Vanecek, Raul Perret, Magdalena Chottová-Dvořáková, Michal Zamecnik, Ladislav Hadravsky, Michal Michal, Dmitry V Kazakov
Basal cell carcinoma (BCC) with matrical differentiation is a fairly rare neoplasm, with about 30 cases documented mainly as isolated case reports. We studied a series of this neoplasm, including cases with an atypical matrical component, a hitherto unreported feature. Lesions coded as BCC with matrical differentiation were reviewed; 22 cases were included. Immunohistochemical studies were performed using antibodies against BerEp4, β-catenin, and epithelial membrane antigen (EMA). Molecular genetic studies using Ion AmpliSeq Cancer Hotspot Panel v2 by massively parallel sequencing on Ion Torrent PGM were performed in 2 cases with an atypical matrical component (1 was previously subjected to microdissection to sample the matrical and BCC areas separately)...
March 31, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28368925/a-novel-numerical-scoring-system-for-melanoma-tumor-infiltrating-lymphocytes-has-better-prognostic-value-than-standard-scoring
#8
Gerald Saldanha, Katarina Flatman, Kah Wee Teo, Mark Bamford
The purpose of this study was to evaluate the prognostic value of tumor-infiltrating lymphocytes (TILs) in melanoma and to determine whether a simpler numerical scoring system would be more effective. In total, 655 patients presenting to a UK teaching hospital with primary invasive melanoma were analyzed. TILs were rescored using the standard Clark's method and univariable and multivariable analyses of the effect of TILs on overall survival (OS), disease-specific survival (DSS), and metastasis-free survival (MFS) was assessed using Cox regression...
March 31, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28368924/smarcb1-ini1-loss-in-epithelioid-schwannoma-a-clinicopathologic-and-immunohistochemical-study-of-65-cases
#9
Vickie Y Jo, Christopher D M Fletcher
The epithelioid variant of schwannoma is rare, and loss of SMARCB1/INI1 expression has been observed in a subset of cases. Our aim was to further define the clinicopathologic features and to evaluate SMARCB1/INI1 deficiency in a large cohort of 65 epithelioid schwannomas diagnosed between 2002 and 2015, which consisted of 32 men and 33 women with median age at diagnosis of 45 years (range, 13 to 75 y). Most tumors arose in the extremities (upper, 20, lower, 15) and trunk (17); 9 were visceral (8 gastrointestinal)...
March 31, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28368923/reporting-and-staging-of-testicular-germ-cell-tumors-the-international-society-of-urological-pathology-isup-testicular-cancer-consultation-conference-recommendations
#10
Clare Verrill, Asli Yilmaz, John R Srigley, Mahul B Amin, Eva Compérat, Lars Egevad, Thomas M Ulbright, Satish K Tickoo, Daniel M Berney, Jonathan I Epstein
The International Society of Urological Pathology held a conference devoted to issues in testicular and penile pathology in Boston in March 2015, which included a presentation and discussion led by the testis microscopic features working group. This conference focused on controversies related to staging and reporting of testicular tumors and was preceded by an online survey of the International Society of Urological Pathology members. The survey results were used to initiate discussions, but decisions were made by expert consensus rather than voting...
March 31, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28346327/development-of-a-new-outcome-prediction-model-in-early-stage-squamous-cell-carcinoma-of-the-oral-cavity-based-on-histopathologic-parameters-with-multivariate-analysis-the-aditi-nuzhat-lymph-node-prediction-score-anlps-system
#11
Aditi Arora, Nuzhat Husain, Ankur Bansal, Azfar Neyaz, Ritika Jaiswal, Kavitha Jain, Arun Chaturvedi, Nidhi Anand, Kiranpreet Malhotra, Saumya Shukla
The aim of this study was to evaluate the histopathologic parameters that predict lymph node metastasis in patients with oral squamous cell carcinoma (OSCC) and to design a new assessment score on the basis of these parameters that could ultimately allow for changes in treatment decisions or aid clinicians in deciding whether there is a need for close follow-up or to perform early lymph node dissection. Histopathologic parameters of 336 cases of OSCC with stage cT1/T2 N0M0 disease were analyzed. The location of the tumor and the type of surgery used for the management of the tumor were recorded for all patients...
March 24, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28346326/sarcomas-with-cic-rearrangements-are-a-distinct-pathologic-entity-with-aggressive-outcome-a-clinicopathologic-and-molecular-study-of-115-cases
#12
Cristina R Antonescu, Adepitan A Owosho, Lei Zhang, Sonja Chen, Kemal Deniz, Joseph M Huryn, Yu-Chien Kao, Shih-Chiang Huang, Samuel Singer, William Tap, Inga-Marie Schaefer, Christopher D Fletcher
CIC-DUX4 gene fusion, resulting from either a t(4;19) or t(10;19) translocation, is the most common genetic abnormality detected in EWSR1-negative small blue round cell tumors. Following their discovery it was debated if these tumors should be classified as variants of Ewing sarcoma (ie, atypical Ewing sarcoma) or as a stand-alone pathologic entity. As such the WHO classification temporarily grouped the CIC-rearranged tumors under undifferentiated sarcomas with round cell phenotype, until further clinical evidence was available...
March 24, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28338502/sellar-atypical-teratoid-rhabdoid-tumor-at-rt-a-clinicopathologically-and-genetically-distinct-variant-of-at-rt
#13
Satoshi Nakata, Sumihito Nobusawa, Takanori Hirose, Shinji Ito, Naoko Inoshita, Shunsuke Ichi, Vishwa J Amatya, Yukio Takeshima, Kazuhiko Sugiyama, Yukihiko Sonoda, Hironori Haga, Junko Hirato, Yoichi Nakazato, Hideaki Yokoo
Atypical teratoid/rhabdoid tumors (AT/RTs) are rare aggressive tumors of the central nervous system that predominantly affect infants. Although adult AT/RT are rare, accumulated cases have revealed adult-specific AT/RT in the sellar region. Twelve previously reported cases of sellar AT/RT exclusively occurred in adult females, suggesting biological differences from conventional infant AT/RT. We herein investigated a series of 6 sellar AT/RT for histopathologic features, the molecular status of the INI1/SMARCB1 gene, and clinical courses...
March 23, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28338501/alk-expression-is-a-novel-marker-for-the-wnt-activated-type-of-pediatric-medulloblastoma-and-an-indicator-of-good-prognosis-for-patients
#14
Maria Łastowska, Joanna Trubicka, Magdalena Niemira, Paczkowska-Abdulsalam, Agnieszka Karkucińska-Więckowska, Magdalena Kaleta, Monika Drogosiewicz, Magdalena Tarasińska, Marta Perek-Polnik, Adam Krętowski, Bożenna Dembowska-Bagińska, Wiesława Grajkowska, Maciej Pronicki, Ewa Matyja
ALK gene rearrangements were identified in a variety of cancers, including neuroblastoma, where the presence of ALK expression is associated with adverse prognosis. ALK mutations have recently been found in the pediatric brain tumor medulloblastoma, and microarray data indicate that ALK is highly expressed in a subset of these tumors. Therefore, we investigated whether ALK expression correlates with transcriptional profiles and clinical features of medulloblastoma. Tumors from 116 medulloblastoma patients were studied at diagnosis for the detection of ALK expression at the RNA level by an application of NanoString technology and at the protein level by immunohistochemistry using antibody ALK clone D5F3...
March 23, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28319526/anaplastic-variant-of-diffuse-large-b-cell-lymphoma-displays-intricate-genetic-alterations-and-distinct-biological-features
#15
Mingyang Li, Yixiong Liu, Yingmei Wang, Gang Chen, Qiongrong Chen, Hualiang Xiao, Fang Liu, Chubo Qi, Zhou Yu, Xia Li, Linni Fan, Ying Guo, Qingguo Yan, Shuangping Guo, Zhe Wang
Anaplastic diffuse large B-cell lymphoma (A-DLBCL) is a rare morphologic variant characterized by the presence of polygonal, bizarre-shaped tumor cells. However, the clinicopathologic and genetic features of this variant are largely unknown. In this study, we investigated 35 cases of A-DLBCL with regard to their clinical, pathologic, and genetic characteristics. The age of the patients ranged from 23 to 89 years (median age, 62 y) with a male to female ratio of 23:12. Twenty-two of 26 (85%) patients had Ann Arbor stage III or IV disease, and 17/26 (65%) patients had a high-intermediate or high International Prognostic Index score...
March 17, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28296681/adenovirus-hepatitis-clinicopathologic-analysis-of-12-consecutive-cases-from-a-single-institution
#16
Kurt B Schaberg, Neeraja Kambham, Richard K Sibley, John P T Higgins
Adenoviruses are common pathogens that usually cause self-limited infections. However, in the immunocompromised host they can cause severe infections involving multiple organs including the liver. A search of the pathology database at Stanford University Medical Center (1995 to 2016) identified 12 cases of adenovirus hepatitis including biopsy and autopsy specimens. There were 8 pediatric patients, 7 of which had received orthotropic liver transplants and 1 of which was receiving chemotherapy for lymphoblastic leukemia...
March 14, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28296680/primitive-neuroectodermal-tumors-of-the-female-genital-tract-a-morphologic-immunohistochemical-and-molecular-study-of-19-cases
#17
Sarah Chiang, Matija Snuderl, Sakiko Kojiro-Sanada, Ariadna Quer Pi-Sunyer, Dean Daya, Tohru Hayashi, Luisanna Bosincu, Fumihiro Ogawa, Andrew E Rosenberg, Lars-Christian Horn, Lu Wang, A John Iafrate, Esther Oliva
Primary primitive neuroectodermal tumor (PNET) of the female genital tract is rare, and its proper classification remains unclear. The clinical, histologic, and immunophenotypic features as well as EWSR1 rearrangement status of 19 gynecologic PNETs, including 10 ovarian, 8 uterine, and 1 vulvar tumors, are herein reported. Patient age ranged from 12 to 68 years, with a median age of 20 and 51 years among those with ovarian and uterine PNETs, respectively. Morphologic features of central nervous system (CNS) tumors were seen in 15 PNETs, including 9 medulloblastomas, 3 ependymomas, 2 medulloepitheliomas, and 1 glioblastoma, consistent with central PNET...
March 14, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28296679/primary-cystic-trophoblastic-tumor-of-the-testis-a-study-of-14-cases
#18
Dibson D Gondim, Thomas M Ulbright, Liang Cheng, Muhammad T Idrees
Cystic trophoblastic tumor (CTT) has been described in postchemotherapy retroperitoneal lymph node dissections of patients with testicular germ cell tumors. Prognostically, this lesion is similar to teratoma and no further treatment is required after surgery in the absence of other components. CTT has not, however, been reported in the testis. We identified 14 CTTs in the treated (4) and untreated (9; no information for 1 patient) testes of patients 15 to 43 years old (median, 25) with mixed germ cell tumors...
March 14, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28288039/lmo2-negative-expression-predicts-the-presence-of-myc-translocations-in-aggressive-b-cell-lymphomas
#19
Luis Colomo, Ivonne Vazquez, Natalia Papaleo, Blanca Espinet, Anna Ferrer, Catalina Franco, Laura Comerma, Silvia Hernandez, Xavier Calvo, Antonio Salar, Fina Climent, José Luis Mate, Pilar Forcada, Anna Mozos, Lara Nonell, Antonio Martinez, Anna Carrio, Dolors Costa, Ivan Dlouhy, Itziar Salaverria, Jose Ignacio Martin-Subero, Armando Lopez-Guillermo, Alexandra Valera, Elias Campo
MYC translocation is a defining feature of Burkitt lymphoma (BL), and the new category of high-grade B-cell lymphomas with MYC and BCL2 and/or BCL6 translocations, and occurs in 6% to 15% of diffuse large B-cell lymphomas (DLBCLs). The low incidence of MYC translocations in DLBCL makes the genetic study of all these lymphomas cumbersome. Strategies based on an initial immunophenotypic screening to select cases with a high probability of carrying the translocation may be useful. LMO2 is a germinal center marker expressed in most lymphomas originated in these cells...
March 10, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28288038/immunohistochemical-characterization-of-fumarate-hydratase-fh-and-succinate-dehydrogenase-sdh-in-cutaneous-leiomyomas-for-detection-of-familial-cancer-syndromes
#20
Cody S Carter, Stephanie L Skala, Arul M Chinnaiyan, Jonathan B McHugh, Javed Siddiqui, Xuhong Cao, Saravana M Dhanasekaran, Douglas R Fullen, Amir Lagstein, May P Chan, Rohit Mehra
Hereditary leiomyomatosis and renal cell carcinoma (HLRCC) is caused by germline mutations in the FH gene, and is associated with increased incidence of leiomyomas and a potentially aggressive variant of renal cell carcinoma (HLRCC-associated RCC). Absent immunohistochemical expression of fumarate hydratase (FH) has previously been used to diagnose HLRCC-associated RCC, but immunohistochemical staining of leiomyomas is not standard practice. We performed immunohistochemistry (IHC) on whole sections from consecutive cutaneous leiomyomas from our archives to evaluate for both FH and succinate dehydrogenase B expression, in addition to clinicopathologic data collection and review of all hematoxylin and eosin-stained slides for blinded morphologic evaluation of features reported to be seen in HLRCC-associated uterine leiomyomas...
March 10, 2017: American Journal of Surgical Pathology
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