Foreign-body abscesses presenting as soft-tissue tumours: two case reports.

Foreign bodies in the extremities often present as bony extensions of soft-tissue masses. Wooden foreign bodies can be detected by computed tomography and magnetic resonance imaging, but these studies are often nonspecific and cannot detect small bodies. As illustrated by two cases reported in this paper, these masses are difficult to distinguish from primary soft-tissue sarcomas when the history and imaging findings suggestive of a foreign-body reaction are absent.