This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Which of the following is anaplastic lymphoma kinase (ALK) positive neoplasm? 
Select and explain. 
A. Synol sarcoma, B. Fibromatosis, C. Ewing sarcoma, D. Inflammatory myofibroblastic tumor
D: Inflammatory myofibroblastic tumor
Answer: D: Inflammatory myofibroblastic tumor 
Explanation: Answer- D. Inflammatory myofibroblastic tumorInflammatory myofibroblastic tumor is anaplastic lymphoma kinase (ALK) positive neoplasm.Inflammatory myofibroblastic tumor, though rare, is more common in children, with an equal male-to-female ratio.Presenting symptoms include fever, cough, chest pain, and hemopytsis. It may also be asymptomatic.Anaplastic Lymphoma Kinase (ALK)- Anaplastic lymphoma kinase also known as ALK tyrosine kinase receptor or CD246 (cluster of diff-erentiation 246) is an enzyme that in humans is encoded by ALK gene.Anaplastic Lymphoma Kinase (ALK) Positive NeoplasmsAnaplastic large-cell lymphomasAdenocarcinoma of lungFamilial neuroblastomaInflammatory myofibroblastic tumor