title: Chronic Q fever endocarditis causing massive splenomegaly and hypersplenism.
mesh_terms: D002908:Chronic Disease; D004697:Endocarditis, Bacterial / Q000150:complications*; D006350:Heart Valve Prosthesis; D006801:Humans; D006971:Hypersplenism / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D011778:Q Fever / Q000150:complications*; D013163:Splenomegaly / Q000209:etiology*