This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T., Subject name: Medicine
This specimen was resected from a child with intestinal obstruction. What is the most likely diagnosis? 
Select and explain. 
A. Ascariasis, B. Kala-azar, C. Meckel's diverticulum, D. Strongyloidiasis
A: Ascariasis
Answer: A: Ascariasis 
Explanation: Answer A. AscariasisA mass of Ascaris lumbricoides in the terminal ileum was found to be causing intestinal obstruction in this child from Kenya. The child recovered uneventfully after surgery. In the absence of obstruction, peritonitis, or bowel strangulation, nonsurgical management can include albendazole, ivermectin, or mebendazole.