Eyelash in lacrimal punctum: demonstrating a negative pressure in the lacrimal sac

Dacryolith formation around an eyelash retained in the lacrimal sac.

A dacryolith was discovered in the lacrimal sac during a dacryocystorhinostomy for chronic dacryocystitis in which there was mucocele formation. Morphological examination confirmed the presence of an eyelash at the centre of the stone and electron microscopy demonstrated the presence of fungi (Candida sp.) in a matrix which was of markedly vairable morphology. The mechanism by which a hair ente...

Lacrimal sac mucoepidermoid carcinoma.

A single case of mucoepidermoid carcinoma of the lacrimal sac was considered worth reporting as there are only four other cases described in the literature. The importance of the correct histological diagnosis and the management are discussed. This appears to be the first study of the ultrastructure of lacrimal sac mucoepidermoid tumour.

Lacrimal sac mucocele.

female patient, 54 years old, complained of excessive earing in the right eye for 12 years. After four years, he presented with progressive obstruction of the nasal assages. Approximately one year before presenting to his service, a bulging swelling, painful upon compression, ppeared near the inner corner of the right eye. On physial examination, she demonstrated epiphora in the right eye nd a ...

Carcinoma of the lacrimal sac.

Hemangiopericytoma of the lacrimal sac.

Hemangiopericytoma (HPCT) rarely originates in the lacrimal sac; 7 cases have been reported previously and only 1 contained an ultrastructural study. In this article we report an additional case and review the previous reports. While the initial biopsy specimen showed nonspecific cytologic abnormalities, light and electron microscopic studies on the subsequently excised tumor demonstrated that ...