Objective. To assess the radiological features of Morel-Lavallee effus
ion in the thigh. Design and patients. A restrospective study of clini
cal records and radiological studies was carried out on three patients
with Morel-Lavallee effusion. Results and conclusions. Ultrasound and
computed tomography (CT) were able to locate the effusion in the thre
e patients. CT demonstrated a capsule around the lesion. A fluid-fluid
level was visible with both techniques. Ultrasound and CT are good me
thods for assessing patients with Morel-Lavallee effusion of the thigh
. CT can be used to distinguish patients requiring surgical treatment
from those who could be treated by conservative measures.