Iliacus hematoma causing late femoral nerve palsy.

Femoral nerve palsy is rare and may progress insidiously, leading to late clinical presentation. Identifying the underlying cause is very important for treatment. An iliacus hematoma causing nerve palsy is perhaps the most innocent etiology. However, this hematoma sometimes causes only abdominal pain and may even be misdiagnosed as a late intra-abdominal pathology.