Pelvic digits (also known as pelvic fingers or pelvic ribs) are rare supernumerary benign bony lesions.Most of them are asymptomatic but, when symptomatic, they can pose a diagnostic challenge.We apac1/60/1/cw hereby present a case of a pelvic digit responsible for an organic erectile dysfunction and a disabling pain in the sitting position.
Pelvic radiographs showed a 2-cm ossified cannulated structure emerging from the right ischiopubic ramus, extending down into the right perineal soft tissues.MRI revealed a well-defined cortico-medullary digit with typical bone signal, developing near the hypertrophied root of the right corpus cavernosum and the insertion of the right adductor magnus muscle.The CT scan confirmed a pelvic digit with a pseudarthrotic single joint on the ischium.
After a thorough 2-step surgical resection, pathologists confirmed the diagnosis.This particular radiologic challenge was to differentiate a pelvic digit from osteochondroma, avulsion-fracture sequelae, ligamentous flex 4 heartworm test calcification and myositis ossificans.