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 #4Colonic adenocarcinoma Medullary carcinoma Mantle cell lymphoma Signet ring cell carcinomaDiffuse large B cell lymphoma 2. 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 AngiosarcomaCapillary Hemangioma Kaposi's sarcoma Arteriovenous malformation 3. 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 #5Pancreatic adenocarcinomaSerous cystadenoma Microcystic serous cystadenomaIntraductal papillary-mucinous neoplasm Mucinous cystadenoma 4. 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 #2Marginal zone lymphomaChronic lymphocytic leukemia/small lymphocytic lymphoma Anaplastic large cell lymphoma Mantle cell lymphoma Diffuse large B cell lymphoma 5. Which of the following is the most important prognostic indicator in MALT lymphoma?Bcl-6 positivityALK1 positivity CD30 positivity MUM-1 positivityThe presence of Helicobacter pylori organisms 6. 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 #6Neuroendocrine CarcinomaSolid-pseudopapillary tumor Diffuse large B cell lymphoma Pancreatic adenocarcinomaCarcinoid tumor 7. 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 8. All of the following are helpful in diagnosing reflux esophagitis (GERD) EXCEPT:Basal layer >15% of mucosal thickness Intraepithelial neutrophils All of the above are helpful in diagnosis of GERDIntraepithelial eosinophils in the range of 30/hpfSubepithelial papillae that extend > 2/3rds of the mucosal thickness 9. 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 #3Signet ring cell carcinoma Carcinoid tumor Small cell carcinoma Neuroendocrine carcinoma Basaloid squamous cell 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 #7Brunner's gland adenoma AdenocarcinomaCarcinoidPancreatic heterotopiaGastric heterotopia Loading...