WBR0246
| Author | [[PageAuthor::Rim Halaby, M.D. [1]]] |
|---|---|
| Exam Type | ExamType::USMLE Step 1 |
| Main Category | MainCategory::Pathology |
| Sub Category | SubCategory::Gastrointestinal, SubCategory::Gastrointestinal |
| Prompt | [[Prompt::A 62-year-old male complains of four months history of worsening abdominal pain. The pain is localized in the upper abdominal area and it is dull in nature, constant and progressively increasing in intensity independently from food intake or change in posture. Review of system is significant for several months history of increasing fatigue and weight loss. CT scan reveals a mass in the stomach. Endoscopy guided biopsy of the mass reveals extensive aggregation of spindle cells highly suspicious of gastrointestinal stromal tumor (GIST). Immunohistochemistry of which of the following is diagnostic of GIST?]] |
| Answer A | AnswerA::C kit gene |
| Answer A Explanation | AnswerAExp:: |
| Answer B | AnswerB::Ret gene |
| Answer B Explanation | AnswerBExp:: |
| Answer C | AnswerC::Abl gene |
| Answer C Explanation | AnswerCExp:: |
| Answer D | AnswerD::Ras gene |
| Answer D Explanation | AnswerDExp:: |
| Answer E | AnswerE::C myc gene |
| Answer E Explanation | AnswerEExp:: |
| Right Answer | RightAnswer::E |
| Explanation | [[Explanation:: Educational Objective: |
| Approved | Approved::No |
| Keyword | |
| Linked Question | Linked:: |
| Order in Linked Questions | LinkedOrder:: |