Primary axillary hydatid cyst: A rare location

A 77-year-old female presented to our clinic with a mass in the right axilla. Coronal (Panel A) and axial (Panel B) T2-weighted MR images reveal a multiseptated cystic lesion solely in the right axillary fossa. Axial pre- (Panel C) and post-contrast (Panel D) T1-weighted MR images show multiple cysts with peripheral enhancement of their walls following gadolinium administration.

Fig. 1

Although extremely rare, clinicians should include hydatid disease in the differential diagnosis of palpable axillary mass lesions in endemic regions.