PathMD Quizes, GI Pathology GI Pathology – 04 October 29, 2017 peferguson Make sure to subscribe to PathMD to stay up to date with new content and features!! 1. A colonic mass is found in a 45-year-old male with a history of anemia. At surgery a hemicolectomy was performed, and representative histologic images are shown for this case. Based on the findings, which of the following is the best diagnosis? Gastrointestinal Pathology - Part 4, Case #4 Gastrointestinal Pathology - Part 4, Case #4Signet ring cell carcinomaColonic adenocarcinoma Mantle cell lymphoma Diffuse large B cell lymphomaMedullary carcinoma 2. A 45-year-old female is found to have a 2.5 cm cecal mass. And excision was performed, and representative images are shown for this case. Based on the histologic findings, what is the most likely diagnosis? Gastrointestinal Pathology - Part 4, Case #3 Gastrointestinal Pathology - Part 4, Case #3 Gastrointestinal Pathology - Part 4, Case #3Neuroendocrine carcinoma Basaloid squamous cell carcinoma Carcinoid tumor Small cell carcinoma Signet ring cell carcinoma 3. All of the following are helpful in diagnosing reflux esophagitis (GERD) EXCEPT:All of the above are helpful in diagnosis of GERDBasal layer >15% of mucosal thickness Subepithelial papillae that extend > 2/3rds of the mucosal thickness Intraepithelial eosinophils in the range of 30/hpfIntraepithelial neutrophils 4. A patient is found to have a liver mass by CT scan. Representative histology is shown in the images for this case. You are asked to review the case. Which of the following is the single test stain to confirm this diagnosis? Gastrointestinal Pathology - Part 4, Case #1 Gastrointestinal Pathology - Part 4, Case #1 Gastrointestinal Pathology - Part 4, Case #1CK-19HepPar-1 stainPASAlpha fetal protein (AFP) level Reticulin stain 5. A 35-year-old female who underwent a CT scan for dysplasia was found to have a localized stomach mass. An EGD was performed, and representative histologic images from the biopsy or shown. Based on the histologic findings, what is the most likely diagnosis? Gastrointestinal Pathology - Part 4, Case #2 Gastrointestinal Pathology - Part 4, Case #2 Gastrointestinal Pathology - Part 4, Case #2Chronic lymphocytic leukemia/small lymphocytic lymphoma Diffuse large B cell lymphoma Anaplastic large cell lymphoma Marginal zone lymphomaMantle cell lymphoma 6. Which of the following is the most important prognostic indicator in MALT lymphoma?The presence of Helicobacter pylori organisms ALK1 positivity Bcl-6 positivityCD30 positivity MUM-1 positivity 7. A patient with a history of HIV and disseminated histoplasmosis undergoes screening colonoscopy for intractable G.I. bleeding. Several red to purple patches are found along the colonic mucosa, and partial resection is performed. Representative histologic sections are shown. Based on the clinical history and histologic findings, what is the best diagnosis? Gastrointestinal Pathology - Part 4, Case #8 Gastrointestinal Pathology - Part 4, Case #8 Gastrointestinal Pathology - Part 4, Case #8Bacillary Angiomatosis Capillary Hemangioma AngiosarcomaKaposi's sarcoma Arteriovenous malformation 8. A 50-year-old female is found to have a 5 cm pancreatic tumor in the tail. A partial pancreatectomy is performed, and representative histologic images are shown for this case. Based on the histologic findings and the clinical history, which of the following is the best diagnosis? Gastrointestinal Pathology - Part 4, Case #5 Gastrointestinal Pathology - Part 4, Case #5Microcystic serous cystadenomaPancreatic adenocarcinomaSerous cystadenoma Intraductal papillary-mucinous neoplasm Mucinous cystadenoma 9. A 30-year-old female is found to have a 10 cm pancreatic mass. Representative histologic slides from this lesion are shown. Based on the history and histologic findings, what is the best diagnosis? Gastrointestinal Pathology - Part 4, Case #6 Gastrointestinal Pathology - Part 4, Case #6 Gastrointestinal Pathology - Part 4, Case #6Solid-pseudopapillary tumor Diffuse large B cell lymphoma Pancreatic adenocarcinomaCarcinoid tumor Neuroendocrine Carcinoma 10. A 55-year-old man undergoes an EGD for dysphasia. While examining the duodenum, and nodularity was noted in the duodenal bulb. This area was biopsy, and representative histologic sections are shown. Based on the histologic findings which of the following is the best diagnosis? Gastrointestinal Pathology - Part 4, Case #7 Gastrointestinal Pathology - Part 4, Case #7 Gastrointestinal Pathology - Part 4, Case #7Gastric heterotopia Pancreatic heterotopiaCarcinoidAdenocarcinomaBrunner's gland adenoma Loading...