Occult oncocytoma of the lacrimal sac

Oncocytoma of the lacrimal sac is a rarely encountered clinical entity. We report the case of a 72-year-old female patient who was diagnosed to have bilateral nasolacrimal duct obstruction during a pre-cataract surgery screening. Subsequently, she underwent bilateral dacryocystectomy. Histopathological examination of the left lacrimal sac revealed a tumour composed of acini lined by oncocytic cells; features consistent with those of a lacrimal sac oncocytoma. Although rare, oncocytomas arising from the lacrimal sac may co-exist with a nasolacrimal duct obstruction. This report describes the histological and immunochemistry characteristics of oncocytomas and underscores the need to subject all excised lacrimal sacs to histopathological examination.     

Hemangiopericytoma of the lacrimal sac

Hemangiopericytomas of the orbit are rare tumors with low malignancy potential. To the authors' knowledge, only three previous cases of these tumors occurring in the lacrimal sac have been reported. The authors report a fourth case. Follow-up was obtained on the first reported case, and the patient in that case had a recurrence after 15 years. These tumors should be totally excised and followed for long periods of time.     

Haemangiopericytoma of the lacrimal sac

Haemangiopericytomas (HPCs) are rare tumours which infrequently occur in the lacrimal sac. Only 8 cases of lacrimal sac HPC have previously been reported. The authors report 2 additional cases presenting clinically with epiphora and a mass. One case recurred 3 times during an 18-year period. The other case did not recur during 51 months of follow-up. The tumours showed immunohistochemical features consistent with a diagnosis of HPC. The authors recommend wide excision for these tumours and careful long-term follow-up to detect recurrence which is not uncommon.     

anastomosis lacrimal sac conjunctival sac in severe laceration of lacrimal canaliculus

PURPOSE:To investigate the clinical effect of anastomosis lacrimal sac conjunctival sac in the treatment of severe laceration of lacrimal canaliculus. METHODS:A total of 19 cases (19 eyes) with laceration of lacrimal canaliculus underwent anastomosis lacrimal sac conjunctival sac.All the patients were followed up for 3 to 24 months postoperatively. RESULTS:Among all the 19 patients (19 eyes), 14 cases were cured,3 cases wre markedly improved and 2 cases had no effect,and the effect rate was 89.47%. CONCLUSION:Anastomosis lacrimal sac conjunctival sac is an effective surgical technique in the management of severe laceration of lacrimal canaliculus.     

Neurofibroma of the lacrimal sac

Neurofibroma is an extremely rare neural tumor of the lacrimal sac. We present a case of neurofibroma of the lacrimal sac in a 45-year-old lady. Based on the history of intermittent epiphora, presence of a mass in the lacrimal sac region, dacryocystogram suggestive of space occupying lesion within the lacrimal sac and computed tomographic image of a tumor lying in the lacrimal fossa region, a tentative diagnosis of lacrimal sac neoplasm was made. Excision of the tumor with repair of the lacrimal sac was performed. Histopathology proved it to be neurofibroma of the lacrimal sac. Until now, only four cases have been reported worldwide. The paucity of reported cases limits our knowledge regarding the natural course, treatment, results and prognosis of this tumor.     

Argyrosis of the lacrimal sac

Silver deposition in the wall of the lacrimal sac after prolonged application of mild silver protein (Argyrol) eye drops is documented at the light and electron microscopical level. Silver granules were found in the extracellular matrix predominantly on elastic fibres and within cells forming conglomerates in secondary lysosomes. Most of the silver-containing cells showed a prominent rough endoplasmic reticulum, suggesting their fibroblastic origin. Investigation by energy-dispersive analysis of X-rays (EDAX) indicated the precipitation of silver as selenide.