Kute VB et al. – A 42–year–old renal transplant recipient was admitted with fever, anorexia, malaise, nonproductive cough, and dyspnea of 1–week duration. Multiple cultures of blood, sputum, and urine were negative. The possibility of bronchiolitis obliterans with organizing pneumonia (BOOP) was considered when pulmonary infiltrate did not respond to conventional antibiotic therapy. Mycobacterium tuberculosis, cytomegalovirus, fungi, and atypical germs, and showed evidence of BOOP. The patient recovered completely after treatment with steroids.