Sublingual hydatid cyst: case report and literature review.
OBJECTIVE
To demonstrate the importance of detailed clinical analysis in the differential diagnosis of a cyst in the floor of the mouth, and to provide an update on current knowledge and treatment of sublingual hydatid cyst.


METHODS
A 23-year-old man presented complaining of a swelling in the midline of the sublingual region, present for four months and progressively increasing in size. Ultrasonography of the neck revealed a well defined, hypoechoic lesion in the sublingual region, containing a calcific focus. Fine needle aspiration cytology showed numerous round to oval structures resembling brood capsules, with scolices and occasional hooklets. T1- and T2-weighted, multiplanar magnetic resonance imaging scans showed a well defined, multiloculated lesion in the sublingual region.


CONCLUSIONS
Hydatid disease may present as a slow-growing cyst in the sublingual region. Aspiration cytology should preferably be avoided until radiological imaging studies are complete. A high index of suspicion is necessary to diagnose hydatid disease in an unusual location.
Department of Otorhinolaryngology, St John's Medical College and Hospital, St John's National Academy of Health Sciences, Bangalore, India. kiranjumani@gmail.com
K T
KT
Jumani
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A
Ananthamurthy
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B
Joy
R C
RC
Nayar
D003937:Diagnosis, Differential; D004443:Echinococcosis / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D009059:Mouth Diseases / Q000000981:diagnostic imaging / Q000473:pathology*; D009060:Mouth Floor / Q000000981:diagnostic imaging / Q000473:pathology; D014463:Ultrasonography; D055815:Young Adult