Neoplasms of the nailbed

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

References

1 2 3 4 5 James, William; Berger, Timothy; Elston, Dirk (2005). Andrews' Diseases of the Skin: Clinical Dermatology. (10th ed.). Saunders. ISBN 0-7216-2921-0.

Tumors: Skin neoplasm, skin appendages / Adnexal and skin appendage (C44.L40–L68/D23.L15–49, 173/216)

Glands

Sweat gland

Eccrine:	Papillary eccrine adenoma Eccrine carcinoma Eccrine nevus Syringofibroadenoma Spiradenoma

Apocrine:	Cylindroma Dermal cylindroma Syringocystadenoma papilliferum Papillary hidradenoma Hidrocystoma Apocrine gland carcinoma Apocrine nevus

Eccrine/apocrine:	Syringoma Hidradenoma or Acrospiroma/Hidradenocarcinoma Ceruminous adenoma

Sebaceous gland

Hair

Pilomatricoma/Malignant pilomatricoma Trichoepithelioma Multiple familial trichoepithelioma Solitary trichoepithelioma Desmoplastic trichoepithelioma Generalized trichoepithelioma Trichodiscoma Trichoblastoma Fibrofolliculoma Trichilemmoma Trichilemmal carcinoma Proliferating trichilemmal cyst Giant solitary trichoepithelioma Trichoadenoma Trichofolliculoma Dilated pore

Isthmicoma Fibrofolliculoma Perifollicular fibroma Birt–Hogg–Dubé syndrome

Hamartoma:	Basaloid follicular hamartoma Folliculosebaceous cystic hamartoma Folliculosebaceous-apocrine hamartoma

Nails

Neoplasms of the nailbed

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