The changes occurring in the skeletal system in patients with hemophilia have been thoroughly described and are well known to the radiologist (1, 7). An uncommon radiographic manifestation is the so-called hemophilic “pseudotumor” of bone, which may occur in the extremities or the pelvis, mimicking the radio-graphic features of bone neoplasms (2, 4, 6, 11). Several reports of pseudotumors of the iliac bone have appeared recently (3, 6, 10), following the original case of Forfota, quoted by Petersen (9). An additional example is reported here, substantiated by autopsy findings. Case History A 25-year-old-man, with a twelve-year history of hemophilia, had experienced frequent hemorrhages into the tissues and serous cavities. Four years before admission a large hematoma had developed in the right lumbar area. This eventually broke through the skin and later became infected. In spite of intensive radiation therapy, the patient died three months after admission.