Polyglobulia Masquerading as Polycythaemia Vera Presenting as Superior Mesenteric Vein Thrombosis: A Case Report

Polyglobulia is secondary polycythaemia commonly due to underlying non haematological diseases like Chronic Obstructive Pulmonary Disease (COPD), obstructive sleep apnoea and also sometimes in people living in hilly or forest areas. It can occur in any venous or atrial thrombosis of the vessels, but cardiac, cerebral, and mesenteric vessels are usually involved. One of the rare causes of abrupt severe abdominal discomfort is portal vein thrombosis, usually associated with liver cirrhosis and thrombophilia. In this case report, the authors have highlighted a case of a 36-year-old male residing in the hilly area of Maharashtra, India, who reported to hospital with severe abdominal pain due to superior mesenteric vein thrombosis. On investigation, he had increased haemoglobin with raised haematocrit diagnosed as polyglobulia and became part of polycythaemia with positive JAK2 V617F mutation