Unusual presentations of pleomorphic adenoma and adenoid cystic carcinoma of the lacrimal gland.
OBJECTIVE
To report two atypical cases of pleomorphic adenoma and adenoid cystic tumours of the lacrimal gland.


METHODS
Two case reports are presented. The first is of a 65-year-old female with a long history of right hypoglobus with sudden recent worsening. Computed tomography (CT) showed a round, well-defined lesion in the fossa for the lacrimal gland with an anterior hypodense extension suggestive of possible malignancy in a pleomorphic adenoma. The tumour in the second case, a 35-year-old male, was diagnosed after presentation following a relatively minor periorbital injury. The smooth rounded mass on CT scan was suggestive of a benign lacrimal gland tumour.


RESULTS
The lesion in case 1 was excised with a diagnosis of haemorrhage within a pleomorphic adenoma. The lesion in case 2 was excised with a diagnosis of adenoid cystic carcinoma of the lacrimal gland with pseudocapsule.


CONCLUSIONS
Haemorrhagic cyst developing beneath the pseudocapsule of a pleomorphic adenoma should be considered in the differential diagnosis of secondary development of malignancy in a pleomorphic adenoma. Adenoid cystic tumours of the lacrimal gland can present with a pseudocapsule.
Wharton
J A
JA
Royal North Shore Hospital, St Leonards, New South Wales, Australia.
O'Donnell
B A
BA
D008949:Adenoma, Pleomorphic / Q000000981:diagnostic imaging* / Q000473:pathology; D000328:Adult; D000368:Aged; D003528:Carcinoma, Adenoid Cystic / Q000000981:diagnostic imaging* / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007766:Lacrimal Apparatus Diseases / Q000000981:diagnostic imaging* / Q000473:pathology; D008297:Male; D009915:Orbit / Q000000981:diagnostic imaging / Q000293:injuries; D014057:Tomography, X-Ray Computed; D014949:Wounds, Nonpenetrating / Q000000981:diagnostic imaging