This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vascular surgery, Subject name: Surgery
Immuno-proliferative lymphoma presents with? 
Select and explain. 
A. Chronic diarrhea, B. Obstruction, C. Peritonitis, D. Tenesmus
A: Chronic diarrhea
Answer: A: Chronic diarrhea 
Explanation: Immunoproliferative small intestinal disease (IPSID), is a B cell tumor. The presentation includes chronic diarrhoea, steatorrhea associated with vomiting and abdominal cramps. IPSID presents with intestinal secretions of an abnormal IgA that contains a shoened heavy chain and is devoid of light chains. It is suspected that the abnormal chains are produced by plasma cells infiltrating the small bowel. The clinical course is one of exacerbations and remissions, with death due to malnutrition and wasting or the development of a lymphoma.