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Subepithelial tumor

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https://www.readbyqxmd.com/read/28177962/pediatric-cystic-nephroma-is-morphologically-immunohistochemically-and-genetically-distinct-from-adult-cystic-nephroma
#1
Yunjie Li, Bruce R Pawel, Dana A Hill, Jonathan I Epstein, Pedram Argani
The term cystic nephroma has traditionally been used to refer to 2 neoplasms, a lesion in adults that is now thought to be part of the spectrum of mixed epithelial stromal tumor (MEST) and a pediatric lesion that has been associated with mutations in the DICER1 gene. A direct detailed morphologic, immunohistochemical, and genetic comparison of these 2 lesions has not been performed. In this study, we compare the morphologic features, immunoreactivity for estrogen receptor and inhibin, and DICER1 genetic status of 12 adult cystic nephroma/MEST (median age 50...
February 7, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28131864/comparison-of-fine-needle-aspiration-and-fine-needle-biopsy-for-eus-guided-sampling-of-suspected-gi-stromal-tumors
#2
Abdul Hamid El Chafic, David Loren, Ali Siddiqui, Rawad Mounzer, Natalie Cosgrove, Thomas Kowalski
BACKGROUND AND AIM: Subepithelial lesions (SEL) are found in about 1% of all esophagogastroduodenoscopy (EGD) procedures, and GI stromal tumors (GISTs) are a type of SEL commonly encountered. Although the majority of SELs are benign, GISTs have malignant potential, making a definitive diagnosis important. Currently, the criterion standard for the diagnosis of GISTs is EUS-directed fine-needle aspiration (EUS-FNA). The definitive diagnosis of GISTs relies upon immunohistochemical (IHC) staining, which depends on enough tissue being submitted to the pathologist...
January 25, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28109714/biliary-tumors-with-pancreatic-counterparts
#3
Yasuni Nakanuma, Yoshiko Sudo
Some biliary diseases mimic pancreatic diseases pathologically as well as pathogenetically. Such diseases can be called "biliary diseases with pancreatic counterparts". Biliary intraepithelial neoplasm (BilIN), intraductal papillary neoplasm of bile ducts (IPNB), hepatobiliary mucinous cystic neoplasm (hMCN), and IgG4-inflammatory pseudotumor represent the biliary counterparts of pancreatic intraepithelial neoplasm (PanIN), intraductal papillary mucinous neoplasm of pancreas (IPMN), pancreatic MCN, and mass forming type 1 autoimmune pancreatitis (AIP), respectively...
December 20, 2016: Seminars in Diagnostic Pathology
https://www.readbyqxmd.com/read/28103839/computed-tomography-and-magnetic-resonance-imaging-of-a-plexiform-angiomyxoid-myofibroblastic-tumor-a-case-report
#4
Hiroyuki Akai, Shigeru Kiryu, Masaru Shinozaki, Yasunori Ohta, Yoshiyasu Nakano, Koichiro Yasaka, Kuni Ohtomo
BACKGROUND: Plexiform angiomyxoid myofibroblastic tumor (PAMT) is a very rare mesenchymal tumor of the stomach. Here we report a case of pathologically confirmed PAMT with an unique cyst formation. CASE PRESENTATION: A 55-year-old male with a 10-year history of a gastric subepithelial tumor underwent computed tomography (CT) and magnetic resonance imaging (MRI). Two cysts were observed in the tumor, and the cyst wall showed moderately high intensity on T2-weighted images compared with the gastric wall...
January 19, 2017: BMC Medical Imaging
https://www.readbyqxmd.com/read/28079232/predictive-features-for-histology-of-gastric-subepithelial-lesions
#5
Ricardo Teles Schulz, Lizandra Castilho Fabio, Matheus Cavalcante Franco, Sheila A Siqueira, Paulo Sakai, Fauze Maluf-Filho
BACKGROUND: - Gastric subepithelial lesion is a relatively common diagnosis after routine upper endoscopy. The diagnostic workup of an undetermined gastric subepithelial lesion should take into consideration clinical and endoscopic features. OBJECTIVE: - We aimed to investigate the association between patients' characteristics, endoscopic and echographic features with the histologic diagnosis of the gastric subepithelial lesions. METHODS: - This is a retrospective study with 55 patients, who were consecutively diagnosed with gastric subepithelial lesions, from October 2008 to August 2011...
January 2017: Arquivos de Gastroenterologia
https://www.readbyqxmd.com/read/28025474/mediastinal-tuberculous-lymphadenitis-diagnosed-by-endosonographic-fine-needle-aspiration
#6
Joonhwan Kim, Youngwoo Jang, Kyung Oh Kim, Yoon Jae Kim, Dong Kyun Park, Dong Hae Chung, Eun Young Kim, Jun Won Chung
Isolated mediastinal tuberculous lymphadenitis is clinically rare. Its clinical presentation may mimic an esophageal submucosal tumor by extrinsic compression. A 26-year-old woman was referred to our hospital for an esophageal subepithelial tumor. A 15×10 mm sized subepithelial lesion was found 30 cm from the upper incisors on esophagogastroduodenoscopy. We diagnosed the lesion as a submucosal tumor, and performed endoscopic ultrasonography-guided fine needle aspiration for a pathologic diagnosis. The histologic examination revealed granulomatous inflammation consistent with tuberculosis...
December 25, 2016: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28005903/ct-features-of-colorectal-schwannomas-differentiation-from-gastrointestinal-stromal-tumors
#7
Ji Hee Kang, Se Hyung Kim, Young Hoon Kim, Sung Eun Rha, Bo Yun Hur, Joon Koo Han
PURPOSE: To find differential CT features of colorectal schwannomas from gastrointestinal stromal tumors (GISTs). MATERIALS AND METHODS: CT features of 13 pathologically proven colorectal schwannomas and 21 GISTs were retrospectively reviewed. The following CT items were analyzed: size, longitudinal and transverse location, shape, margin, homogeneity, necrosis, surface ulceration, calcification, degree of attenuation, the presence of enlarged lymph node (LN), and metastasis...
2016: PloS One
https://www.readbyqxmd.com/read/28000630/can-contrast-enhanced-harmonic-endosonography-predict-malignancy-risk-in-gastrointestinal-subepithelial-tumors
#8
Hye Yoon Park, Seong Woo Jeon, Hyun Seok Lee, Chang Min Cho, Han Ik Bae, An Na Seo, Oh Kyung Kweon
BACKGROUND AND OBJECTIVES: Contrast-enhanced harmonic endoscopic ultrasound (CEH-EUS) is a novel technology that can identify subepithelial tumors (SETs) by detecting the degree of enhancement, but whether CEH-EUS can predict the malignancy risk of gastrointestinal stromal tumors (GISTs) remains unclear. The aim of our study was to evaluate the diagnostic accuracy of CEH-EUS and its ability to discriminate among SETs and predict the malignancy risk of GISTs. MATERIALS AND METHODS: We retrospectively included patients with suspected subepithelial lesions who underwent CEH-EUS preoperatively...
November 2016: Endoscopic Ultrasound
https://www.readbyqxmd.com/read/27996335/laparoscopy-assisted-endoscopic-full-thickness-resection-for-gastric-subepithelial-tumors-originated-from-the-muscularis-propria-layer-a-pilot-study-with-literature-review
#9
Sun Gyo Lim, Hoon Hur, Sang-Uk Han, Kee Myung Lee, Joon Koo Kang, Sung Jae Shin, Yong Kwan Cho, Jin Hong Kim
OBJECTIVE: Laparoscopy-assisted endoscopic full-thickness resection (LAEFTR) has been suggested as an alternative to laparoscopic wedge resection in the treatment of gastric subepithelial tumors (SETs). It is expected to minimize the resection of the tissue surrounding the tumors and maintain the function of the remnant stomach. Here, we performed a prospective pilot study to evaluate the efficacy of laparoscopy-assisted endoscopic full-thickness resection (LAEFTR) for patients with gastric SETs...
March 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/27878477/paraneoplastic-pemphigus-and-autoimmune-blistering-diseases-associated-with-neoplasm-characteristics-diagnosis-associated-neoplasms-proposed-pathogenesis-treatment
#10
REVIEW
Saritha Kartan, Vivian Y Shi, Ashley K Clark, Lawrence S Chan
Autoimmune paraneoplastic and neoplasm-associated skin syndromes are characterized by autoimmune-mediated cutaneous lesions in the presence of a neoplasm. The identification of these syndromes provides information about the underlying tumor, systemic symptoms, and debilitating complications. The recognition of these syndromes is particularly helpful in cases of skin lesions presenting as the first sign of the malignancy, and the underlying malignancy can be treated in a timely manner. Autoimmune paraneoplastic and neoplasm-associated bullous skin syndromes are characterized by blister formation due to an autoimmune response to components of the epidermis or basement membrane in the context of a neoplasm...
November 22, 2016: American Journal of Clinical Dermatology
https://www.readbyqxmd.com/read/27858880/endoscopic-ultrasound-without-tissue-acquisition-has-poor-accuracy-for-diagnosing-gastric-subepithelial-tumors
#11
Tae Won Lim, Cheol Woong Choi, Dae Hwan Kang, Hyung Wook Kim, Su Bum Park, Su Jin Kim
Incidental gastric subepithelial tumor (SET) is frequently found during endoscopy. Although endoscopic ultrasonography (EUS) can provide useful information, its diagnostic accuracy varies. Most of the potentially malignant tumors observed on EUS are hypoechoic lesions. Therefore, we aimed to investigate the diagnostic accuracy of EUS for hypoechoic lesions located in the submucosa or proper muscle layer. We also evaluated various characteristics for potential associations with diagnostic accuracy.A retrospective review was conducted of the medical records of 99 patients who were diagnosed with gastric SET and who underwent EUS with pathologic confirmation between March 2008 and April 2015...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27824024/ultrasound-contrast-agents
#12
REVIEW
Andre Ignee, Nathan S S Atkinson, Gudrun Schuessler, Christoph F Dietrich
Endoscopic ultrasound (EUS) plays an important role in imaging of the mediastinum and abdominal organs. Since the introduction of US contrast agents (UCA) for transabdominal US, attempts have been made to apply contrast-enhanced US techniques also to EUS. Since 2003, specific contrast-enhanced imaging was possible using EUS. Important studies have been published regarding contrast-enhanced EUS and the characterization of focal pancreatic lesions, lymph nodes, and subepithelial tumors. In this manuscript, we describe the relevant UCA, their application, and specific image acquisition as well as the principles of image tissue characterization using contrast-enhanced EUS...
November 2016: Endoscopic Ultrasound
https://www.readbyqxmd.com/read/27780946/-a-case-of-cecal-endometriosis-presenting-as-subepithelial-tumor
#13
Min Sik Hwang, Young Don Kim, Sa Young Shin, Jae Hyuck Jun, Jong Sam Hong, Dae Woon Eom, Gab Jin Cheon
Endometriosis is a benign gynecologic disease, characterized by the presence and growth of functional endometrial-like tissue outside uterus. This ectopic endometrial tissue is most commonly found in the peritoneum, ovaries and uterosacral ligaments, but extremely rarely there is involvement of the appendix or cecum. Here we report a case of cecal endometriosis presenting as a subepithelial tumor diagnosed by surgical excision.
October 25, 2016: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/27780945/endoscopic-resection-of-a-giant-esophageal-lipoma-causing-sudden-choking
#14
Dong Ho Jo, Hyung Ku Chon, Sun Ho Woo, Tae Hyeon Kim
Most esophageal lipomas are discovered incidentally and are small and asymptomatic. However, large (>4 cm) lipomas may cause various symptoms, including dysphagia, regurgitation, or epigastric discomfort. We present a 45-year-old woman with intermittent sudden choking and globus pharyngeus. Upper gastrointestinal endoscopy and endoscopic ultrasound revealed an approximately 10.0×1.5 cm pedunculated subepithelial tumor in the upper esophagus, identified as the cause of her symptoms. A thoracic computed tomography scan revealed a fat attenuated longitudinal mass along the upper esophagus, suggestive of a lipoma...
October 25, 2016: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/27752408/esophageal-granular-cell-tumor-a-case-report-and-review-of-literature
#15
Nishitha Thumallapally, Uroosa Ibrahim, Mayurathan Kesavan, Qing Chang, Lynne Opitz, Meekoo Dhar, Sherif Andrawes
Granular cell tumors (GCTs) are soft tissue neoplasms that originate from Schwann cells. They occur predominantly in the oral cavity, skin, and breast tissues. Gastrointestinal GCTs are very rare, accounting for only eight percent of all GCTs, most of which are located in the esophagus. Endoscopic ultrasound has been a breakthrough in diagnosing GCTs because it provides precise information on the depth of tumor invasion, thus narrowing the differential diagnosis of subepithelial lesions in the esophagus. However, the definitive diagnosis requires histological confirmation of the lesion...
September 14, 2016: Curēus
https://www.readbyqxmd.com/read/27744661/endoscopic-ultrasonography-in-the-diagnosis-of-gastric-subepithelial-lesions
#16
REVIEW
Eun Jeong Gong, Do Hoon Kim
Subepithelial lesions occasionally found in the stomach of patients undergoing endoscopy may be either benign lesions or tumors with malignant potential. They may also appear due to extrinsic compression. Discrimination of gastric subepithelial lesions begins with meticulous endoscopic examination for size, shape, color, mobility, consistency, and appearance of the overlying mucosa. Accurate diagnosis can be achieved with endoscopic ultrasonography, which provides useful information on the exact size, layer-of-origin, and characteristic morphologic features to support a definitive diagnosis...
September 2016: Clinical Endoscopy
https://www.readbyqxmd.com/read/27709855/using-forceps-biopsy-after-small-submucosal-dissection-in-the-diagnosis-of-gastric-subepithelial-tumors
#17
Yoon Suk Jung, Hyuk Lee, Kyungeun Kim, Jin Hee Sohn, Hong Joo Kim, Jung Ho Park
The current tissue sampling techniques for subepithelial tumors (SETs) of the gastrointestinal (GI) tract have limited diagnostic efficacy. We evaluated the diagnostic yield and safety of forceps biopsies after small endoscopic submucosal dissection (SESD biopsies) in the diagnosis of gastric SETs. A total of 42 patients with gastric SETs > 10 mm were prospectively enrolled between May 2013 and October 2014. A dual knife was used to incise the mucosa and submucosa and forceps biopsies were then introduced deep into the lesion...
November 2016: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/27671744/submucosal-tunneling-endoscopic-resection-using-methylene-blue-guidance-for-cardial-subepithelial-tumors-originating-from-the-muscularis-propria-layer
#18
Xin-Li Mao, Li-Ping Ye, Hai-Hong Zheng, Xian-Bin Zhou, Lin-Hong Zhu, Yu Zhang
Submucosal tunneling endoscopic resection (STER) of subepithelial tumors (SETs) originating from the muscularis propria (MP) layer in the cardia is rarely performed due to the difficulty of creating a submucosal tunnel for resection. The aim of this study was to evaluate the feasibility of STER using methylene-blue guidance for SETs originating from the MP layer in the cardia. From January 2012 to December 2014, 56 patients with SETs originating from the MP layer in the cardia were treated with STER using methylene-blue guidance...
September 26, 2016: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/27666766/immunohistochemical-analysis-of-the-novel-marginal-zone-b-cell-marker-irta1-in-malignant-lymphoma
#19
Jun-Ichiro Ikeda, Masaharu Kohara, Yoko Tsuruta, Satoshi Nojima, Shinichiro Tahara, Kenji Ohshima, Masako Kurashige, Naoki Wada, Eiichi Morii
Marginal zone lymphoma (MZL) is a low-grade B-cell lymphoma derived from marginal zone B cells. Because of a lack of specific immunohistochemical markers, MZL is mainly diagnosed based on the cytological appearance and growth pattern of the tumor. Marginal zone B cells were recently shown to selectively express immunoglobulin superfamily receptor translocation-associated 1 (IRTA1), but the antibody used in that study is not commercially available. We therefore investigated the IRTA1 expression in nonneoplastic lymphoid tissues and 261 malignant lymphomas, examining the ability of a commercially available antibody to accurately diagnose MZL...
January 2017: Human Pathology
https://www.readbyqxmd.com/read/27665176/crohn-s-disease-associated-mucosal-factors-regulate-the-expression-of-tnf-like-cytokine-1a-and-its-receptors-in-primary-subepithelial-intestinal-myofibroblasts-and-intestinal-epithelial-cells
#20
Giorgos Bamias, Eirini Filidou, Dimitris Goukos, Vasilis Valatas, Konstantinos Arvanitidis, Maria Panagopoulou, Georgios Kouklakis, George L Daikos, Spiros D Ladas, George Kolios
Intestinal subepithelial myofibroblasts (SEMFs) exert a profibrotic role in Crohn's disease (CD). Tumor necrosis factor-like cytokine 1A (TL1A) and its receptors, death-domain receptor 3 (DR3) and decoy receptor 3 (DcR3), are mucosal factors with significant involvement in experimental inflammation and CD. We aimed to determine the regulation of expression of this system of proteins in SEMFs and intestinal epithelial cells. The relative amount of mRNA transcripts for TL1A, DR3, and DcR3 was measured by real-time reverse transcription polymerase chain reaction in cultured primary SEMFs, colonic myofibroblast cell line 18CO, and epithelial cell line HT29...
September 7, 2016: Translational Research: the Journal of Laboratory and Clinical Medicine
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