[An adrenal incidentaloma in a trauma patient; a plea for expectant management].

An adrenal incidentaloma was detected in 45-year-old female driver after a car-versus-car collision. The mass, which had a diameter of 5.4 cm, was not a hormone-producing tumour, but because of its size laparoscopic adrenalectomy was performed 2 months later. Pathology examination revealed an old haematoma situated centrally in the right adrenal gland. Posttraumatic adrenal haematoma is found in 25% of autopsies of traumatized patients. Most adrenal haematomas have an ovoid appearance on CT and have a slight hyperattenuation. Follow-up CT of an adrenal haematoma shows a decrease in size and attenuation. It is therefore proposed that adrenal incidentalomas detected during trauma screening should be evaluated by repeating CT after 3 months. If the mass has diminished and its density decreased, it is most probably an adrenal haematoma, in which case unnecessary surgery may be avoided.