EurekaMag.com logo
+ Site Statistics
References:
52,725,316
Abstracts:
28,411,598
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Phakomatous choristoma of the lower eyelid with psammoma body formation a light microscopic and electron microscopic study






Ophthalmology 88(12): 1198-1206

Phakomatous choristoma of the lower eyelid with psammoma body formation a light microscopic and electron microscopic study

A firm, round tissue mass, measuring .apprx. 12 mm in diameter, was excised from a 5-mo.-old boy who had a history of a gradually enlarging swelling in the left lower nasal eyelid since birth. Histologically and ultrastructurally, the lesion appeared benign and was composed of a dense connective tissue stroma in which nests, lobules, tubules, cords and sheets of large, pale-staining cuboidal and elongated epithelial cells were surrounded by an irregular, thick PAS[periodic acid Schiff]-positive basement membrane having focal excrescences. The interior of the epithelial islands contained bladder cells, cellular debris, granuloamorphous material and foci of dystrophic calcification; an unusual feature of the lesion was the formation of numerous psammoma bodies. Tumors of lenticular anlage are rare and probably result from displacement or migration of the inferior lens placode cells; alternatively, it may originate from an additional locus of lens vesicle in the primitive surface ectoderm of the lower lid. The lesion enlarges because of the differentiation of the ectopic lenticular cells in an abortive attempt to form a lens within the extraocular and mesodermal environment of the lid.


Accession: 006092852



Related references

Phakomatous choristoma of the lower eyelid with psammoma body formation: a light and electron microscopic study. Ophthalmology 88(12): 1198-1206, 1981

Phakomatous choristoma of the eyelid. Immunohistochemical and electron microscopic observations. Ophthalmology 99(12): 1779-1784, 1992

Phakomatous choristoma of the lower eyelid. A light and ultrastructural study. Archives of Pathology & Laboratory Medicine 113(10): 1175-1177, 1989

Phakomatous choristoma of the lower eyelid: a case study with a review of the literature. Annals of Ophthalmology 39(3): 255-258, 2007

Combined macroscopic light microscopic scanning electron microscopic and transmission electron microscopic investigation of the vitreous body 1. an improved celloidin embedding method for histologic scanning electron microscopic and transmission electron microscopic preparation of the vitreous body. Ophthalmic Research 14(2): 113-116, 1982

Irritated seborrheic keratosis of eyelid and its differential diagnosis. An electron microscopic and light microscopic study. Chinese Medical Journal 101(8): 555-558, 1988

Phakomatous choristoma of lower eyelid a lenticular anlage tumor. Ophthalmologica 175(4): 231-235, 1977

Comparative light microscopic and electron microscopic study of the human dog and rat prostate an approach to an experimental model for human benign prostatic hyperplasia light microscopic and electron microscopic analysis a review. Urologia Internationalis 35(2): 91-104, 1980

Phakomatous choristoma of eyelid: electron microscopical confirmation of lenticular derivation. Archives of Ophthalmology 94(10): 1778-1781, 1976

Duodenal carcinoid (apudoma) with psammoma bodies: a light and electron microscopic study. Cancer 43(4): 1411-1417, 1979