Residents' Corner: Subungual Mucinous Pseudocyst

Abstract

Abstract. A rare presentation of an entirely subungual mucinous pseudocyst is described.

Treatment of Myxoid Cysts

“…The third variant of MC is a world apart and presents as a tumor beneath the nail matrix, tenting the proximal nail and changing the hue of the matrix to red or blue. The effect of pressure from beneath the nail matrix may either switch off nail plate production resulting in an atrophic nail dystrophy, or change the shape of the nail with the appearance of pincer nail or clubbing 9,10 . Rarely is there a history of discharge of mucoid content, because the MC is so well confined beneath matrix and nail.…”

Treatment of Myxoid Cysts

“…The effect of pressure from beneath the nail matrix may either switch off nail plate production resulting in an atrophic nail dystrophy, or change the shape of the nail with the appearance of pincer nail or clubbing. 9,10 Rarely is there a history of discharge of mucoid content, because the MC is so well confined beneath matrix and nail. The exception is where there is complete loss of nail and the matrix may be thin sufficiently to split.…”

Lasers: Treatment of Digital Myxoid Cysts with Carbon Dioxide Laser Vaporization

“…The cure rate associated with this technique is relatively low and requires multiple treatments by a most compliant patient. Intrale‐sional injection with insoluble corticosteroids has also been widely used with limited success 4,5 . Scle‐rosing agents have been similarly ineffective 4,6 …”

“…Effective treatment of this entity can be difficult and many therapeutic modalities have been advocated. Some of these include a multiple needling procedure, 3 injection of intralesional corticoste‐roids, 4,5 electrodesiccation and curettage, 4 cryosur‐gery, 6,7 sclerotherapy, 4,6 and cold steel surgery 8,10 . Despite the enthusiasm of various physicians for each of these techniques, recurrences are common 4,11 …”