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Neoplasms of the nailbed may often present with paronychia, ingrown nail, onycholysis, pyogenic granuloma, nail-plate dystrophy, longitudinal erythronychia, bleeding, and discolorations.[1]:792 There are various benign and malignant neoplasms that may occur in or overlying the nail matrix and in the nailbed, and symptoms may include pain, itching, and throbbing.[1]:792

Benign tumors of the nails include verruca, pyogenic granuloma, fibromas, nevus cell nevi, myxoid cysts, angiofibromas (Koenen tumors), and epidermoid cysts.[1]:792

Squamous cell carcinoma of the nailbed is uncommon, and often mistaken for a pyogenic granuloma initially.[1]:792 Subungual melanoma is frequently diagnosed late in the course of growth.[1]:793[2]


  1. ^ a b c d e James, William; Berger, Timothy; Elston, Dirk (2005). Andrews' Diseases of the Skin: Clinical Dermatology. (10th ed.). Saunders. ISBN 0-7216-2921-0.
  2. ^ "Nails Matsun Supplement". Matsun Nutrition. Retrieved 2017-01-07.