pterygium formation

pterygium formation

replacement of central nail matrix area with fibrous tissue, causing longitudinal thinning/dystrophy of central nail plate; severe cases show longitudinal loss of central nail plate; characteristic of lichen planus
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13,14 The exact mechanism is not known, however fibroblast proliferation is the prime mechanism of pterygium formation and surgery with or without adjuvant therapy is the mainstay of treatment.
Both the lower limbs were arthrogrypotic characterized by fixed-flexion deformity of the hip, flexion of the knees with pterygium formation, dorsi-flexed ankles along with slight eqiunovarus feet (Fig.
Nail changes, such as longitudinal ridging and splitting, onycholysis, red lunula, yellow nail syndrome, and pterygium formation, can occur.
1) Although a hereditary influence on pterygium formation is recognised1 and a report of possible genetic influence in white South Africans has been published, (2) little is known about these factors in black African populations.
Manifestations appeared during the early few months of life and included skin ulcerations, loss of toenails and fingernails, and conjunctival scarring and pterygium formation.
Untreated melanoma is potentially fatal, while nail biopsy is technically difficult, potentially disfiguring, and can be complicated by scarring or pterygium formation.
The conjunctival goblet cell in pterygium formation.
Kwok LS, Coroneo MT: A model for pterygium formation.
4,6] Climatic conditions such as humid weather, dry, hot and dusty atmosphere, wind, sunlight especially ultraviolet light have been claimed to have a definite role in pterygium formation.