Tumor-like tuberculosis of the sacrum.

Isolated tuberculosis of the sacrum in a 43-year-old woman manifested as functional impairment of the right lower limb. Sacral tuberculosis is rare in patients with no history of tuberculosis. Another unusual feature was the tumor-like aspect of the lesion, with diffuse, ill-defined osteolysis of a large part of the sacrum and extension to the presacral soft tissues responsible for rectal displacement.