Femoral Neuropathy Secondary to Iliopsoas Spontaneous Haematoma

We report a case of a 51-year-old male patient under Acénocoumarol medication, he developed a severe right hip and femoral neuropathy with no history of trauma. Laboratory data revealed prolonged international normalized ratio level of 8 and imaging studies showed a large haematoma surrounding the right iliopsoas muscle (16 cm x 8 cm x 3 cm). The patient was treated conservatively with discontinuation of his anticoagulation remedy and vitamin K administration and he was discharged well without complication. Iliopsoas haematoma or spontaneous retroperitoneal haemorrhage is an uncommon complication that needs to be considered in the differential diagnosis of a patient on Acénocoumarol therapy with abdominal, flank or groin pain.