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Melanoma of the nail unit most often affects the great toe and thumbnail, accounting for 75–90% of cases. However, any nail on the finger or toe may be involved. The term includes: Subungual melanoma (melanoma originating from the nail matrix) Ungual melanoma (melanoma originating from under the nail plate)
14 kwi 2023 · Subungual melanoma is a distinct subtype of cutaneous malignant melanoma arising from structures within the nail apparatus. It is ordinarily a variant of acral lentiginous melanoma, a malignant melanoma originating on palms and soles.
15 wrz 2021 · In this report, we describe our institutional series of 25 subungual melanoma patients, including the demographic makeup, clinicopathologic characteristics, and treatment factors associated with survival.
18 kwi 2014 · Subungual melanoma is a rare subtype of melanoma that usually originates and spreads from the nail matrix. Because of its poor prognosis and short matrix-to-bone distance, amputation has been...
Progression of melanoma: Benign nevus→ melanoma in situ→ invasive melanoma→ metastatic melanoma. radial growth→ vertical growth→ lymphatic. The distant spread of subungual melanoma is through the lymphatic system and up to one-quarter of patients can present with lymph node or distant metastasis at presentation. 9.
1 lis 2010 · Subungual bleeding (or subungual haematoma) represents blood beneath the nail, which in some instances may be trapped within pockets of nail plate and be carried with it as the nail grows. Both longitudinal melanonychia and subungual bleeding have a range of benign and malignant causes (see Table 4 ).
11 lis 2021 · NAIL MELANOMA MYTH 2: UNGUAL MELANOMA IS A PARTICULARLY AGGRESSIVE FORM OF MELANOMA, HENCE THE PROGNOSIS IS OFTEN SO POOR. Nail melanomas represent a subdivision of acral melanomas.
