Kaposi's sarcoma accounts for more than 3 % of neoplasms occurring in patients who have undergone atransplant. An epidemiologic study showed that in renal transplanted patients, the incidence of Kaposi's sarcomawas 400 to 500 times higher than in controls of the same ethnic origin. We report a case of Kaposi's sarcomainvolving the lung and skin after immunosuppressive therapy in a patient with renal transplant. A plain chestradiograph showed diffusely increased interstitial opacity with multiple, ill-defined small nodules in both lungfields. HRCT revealed multiple small nodules, predominantly in the peribronchovascular regions, and ill-definedareas of ground-glass opacity and consolidation in both lungs.