a 55-year-old man presented with pain in the left flank for the last 8 months with history of significant weight loss. the pain was relieved on assuming a knee-chest position. on clinical examination the patient was afebrile with mild tenderness in the left hypochondrium. there was no icterus or lymphadenopathy. the spleen was palpable 6 cm below the costal margin and was firm and non-tender. t...
