Primary malignant myelomatous pleural effusion.

Primary malignant myelomatous pleural effusion (PMMPE) occurs in less than 1% of patients with multiple myeloma and is diagnosed either by visualization of plasma cells on cytology or by positive flow cytometry. The presence of immature plasma cells characterized by high nucleus to cytoplasm ratio, visible nucleolus and presence of Mott cells and Russell bodies are independent poor prognostic factors. The clinician should differentiate PMMPE from secondary pleural effusion as it is associated with a significantly worse prognosis and poor overall survival.

Valvular Cytomegalovirus Endocarditis.

Endocarditis is a rare presentation for cytomegalovirus (CMV) infection. We present the case of a 49-year-old man who underwent mitral and tricuspid valve replacement for valvular CMV endocarditis. The patient's past medical history was significant for human immunodeficiency virus, intravenous drug abuse, and chronic hepatitis B.

Renal Angiomyolipoma With Sarcoid Granulomas: Report of a Unique Case.

Angiomyolipoma is a mesenchymal neoplasm characterized by the coexpression of melanocytic and smooth muscle markers. Sarcoidosis is a multisystem disorder of unknown etiology, which presents with characteristic nonnecrotizing granulomas and rarely involves the kidney. The coexistence of renal sarcoidosis with renal neoplasms is exceedingly rare and was reported only with renal cell carcinoma.

A Rare Case of Sarcina ventriculi of the Stomach in an Asymptomatic Patient.

Sarcina ventriculi is a gram-positive coccus that grows in a tetrad arrangement in the stomach. In the past 35 years, less than 20 cases have been reported in the literature, and it has been associated with life-threatening complications such as emphysematous gastritis and perforation. Treatment of S ventriculi generally consists of proton pump inhibitors with or without adjuvant antibiotic therapy.