In general Swelling over sublingual regions will be provisionally diagnosed as Dermoid cyst / Ranula /
Mucous retention cyst / Salivary gland tumours. But in rarest of rare cases, there may be chances of a
Hydatid cyst. Hydatid disease or Echinococcosis is a zoonotic disease caused by Echinococcus granulosus as seen in this
29years old female with swelling over the sublingual region extending into the neck. Clinically appeared as dermoid cyst and
radiological investigations suggestive of the possibility of ranula, so planned for surgery but surprisingly on table after opening
the swelling there was a tough brous layer with underneath thick whitish lamellated membrane, anticipated as hydatid cyst
which was also conrmed by the histopathological report.