1/8. 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 enters the punctum and passes along the canaliculus may be attributed to the step-like pattern of ridges on the surface of a hair. The directional nature of these ridges dictates preferential movement towards the root end of the hair and prevents movements in the opposite direction.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
2/8. Primary localized amyloidosis of the lacrimal glands.Primary localized amyloidosis causing bilateral lacrimal enlargement is rare. The pathogenesis of amyloid deposition within the orbit and other body tissues has not been fully elucidated. The authors report the case of a 72-year-old woman who presented with bilateral lacrimal gland enlargement secondary to amyloid infiltration. The chemical nature of the deposit was characterized using light microscopy, immunohistochemistry, and immunoelectron microscopy. The primary (immunocytic) nature of the amyloid was confirmed by immunohistochemistry demonstrating the presence of monoclonal lambda light chains in the amyloid deposits and in the plasma cells. Using immunoelectron microscopy, amyloid deposits were seen containing lambda light chains in macrophages. It has been postulated that the macrophage has a role in amyloid deposition. The authors believe this to be the first published report of immunoelectron microscopy use in orbital amyloidosis, and that this technique has helped further their understanding of the nature and pathogenesis of this condition.- - - - - - - - - - ranking = 3keywords = nature (Clic here for more details about this article) |
3/8. Plasma cell granuloma of the lacrimal sac.A 31-year-old man with a 2-year history of recurrent dacryocystitis underwent dacryocystorhinostomy. An unexpected operative finding was a polyp in the lacrimal sac. Histopathological examination revealed a plasma cell granuloma. The nature of this uncommon inflammatory pseudotumour of the lacrimal sac is discussed.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
4/8. Recurrent and residual sebaceous carcinoma after Mohs' excision of the primary lesion.We reviewed the histories of three patients with sebaceous carcinoma (two of the eyelid and one of the caruncle) who had had their tumors excised by surgeons experienced in the Mohs' technique. In each patient the tumor was considered totally excised. In one patient, residual intraepithelial pagetoid sebaceous carcinoma of the eyelid was detected incidentally when a reparative flap was placed. In the other two patients, invasive sebaceous carcinoma recurred, necessitating orbital exenteration; one patient has regional lymph node metastases. Because of the difficulty in detecting pagetoid spread on frozen sections and the multicentric nature of sebaceous carcinoma, we advocate managing these tumors by wide local excision, checking margins with high-quality permanent sections.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
5/8. Adenoid cystic carcinoma of lacrimal gland.Adenoid cystic carcinoma of the lacrimal gland is a relatively rare disease. Only two cases, a man of 61 and a woman of 54 were seen in our clinic from 1962-1981. They presented histopathology of the cribriform pattern characteristic of adenoid cystic carcinoma. The lesion in the male patient belonged to the solid type and was mainly composed of solid nests. It is emphasized that radiotherapy in addition to surgical excision of the tumor is recommended because of its infiltrative nature.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
6/8. Cyst of accessory lacrimal gland.When a patient is presented with a subconjunctival cyst, it is not only hard to reveal its true nature clinically but also easy to rupture during excision. We experienced cases with cysts of the accessory lacrimal gland in two patients with subconjunctival cysts. They had lid swelling at initial presentation and underwent surgical excision of subconjunctival cysts located in superior portion of the upper tarsal plate. The lining of these cysts composed of ductal epithelia. Biochemical analyses for serum and cystic fluid were performed in one case, in which was found high Ig A titer in the cystic fluid. These cysts seemed to originate from the duct of Wolfring's accessory lacrimal gland, considering their anatomic locations and pathologic findings. Complete removal of the cyst is important, because recurrences have been reported in cases of incomplete removal or simple aspiration.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
7/8. Multiple ocular impairment in a patient affected by Waldenstrom's macroglobulinaemia.BACKGROUND: We studied a bilateral tumefaction of the lacrimal gland in a female patient. METHOD: Ocular and general clinical examinations were carried out. RESULT: Computerized tomography (CT) of the cranial orbit showed a tumefaction of solid density in the lacrimal gland. Histological examination of material removed by needle aspiration revealed the presence of elements of a lymphoplasmacytoid nature. fluorescein angiography showed dilatation of the veins, intraretinal flame haemorrhages and small ischaemic areas. Chest CT showed an increase in the size of the middle and upper mediastinal lymph nodes, and examination of a specimen of bone marrow from the chest revealed the presence of small lymphocytes with a plasmacytoid tendency. CONCLUSION: On the basis of the findings, we diagnosed Waldenstrom's disease with rare multiple ocular impairment (lacrimal gland and retina) in an early stage.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
8/8. Surgical treatment of dacryocystitis.dacryocystitis is a common infection of the lacrimal sac. In adults, dacryocystitis results from an obstruction (ie, dacryostenosis) of the nasolacrimal duct. dacryocystitis can be either an acute or chronic infection, and both forms usually are unilateral in nature. The hallmark symptom of both forms of dacryocystitis is epiphora (ie, excessive tearing). An obstruction of the lacrimal duct also can cause dacryocystitis. This article discusses the surgical treatment of dacryocystitis and provides a case study that illustrates perioperative nursing care of a patient who required surgical treatment of this lacrimal duct disorder.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |