Merck Manual

Please confirm that you are not located inside the Russian Federation

honeypot link

Tumors of the Nails

By

Chris G. Adigun

, MD, Dermatology & Laser Center of Chapel Hill

Last full review/revision Dec 2021
CLICK HERE FOR THE PROFESSIONAL VERSION
Topic Resources

Noncancerous (benign) and cancerous (malignant) tumors can affect the nail unit, causing a changes in nail texture and/or color (dystrophy Deformities, Dystrophies, and Discoloration of the Nails The terms deformities and dystrophies are often used interchangeably, sometimes even by doctors. However, their meanings are slightly different. Deformities: Changes in nail shape... read more Deformities, Dystrophies, and Discoloration of the Nails ). Many of these are tumors that originate in tissues around but not in the nail.

A dark band in the nail may be the initial sign of malignant melanoma of the nail. Pigment cells of the nail-making tissue, known as the nail matrix, may become malignant and develop into a melanoma. A worrisome sign is known as Hutchinson sign. The Hutchinson sign is black, brown, or gray discoloration that extends to the area around the nail, such as the cuticle or nail fold (the fold of hard skin at the sides of the nail plate where the nail and the skin meet). This sign may mean there is melanoma in the nail bed (the soft tissue underneath the nail plate that attaches the nail to the finger). When this sign is present, doctors do a biopsy of the nail bed abnormality. Melanoma may also occur without the Hutchinson sign.

NOTE: This is the Consumer Version. DOCTORS: CLICK HERE FOR THE PROFESSIONAL VERSION
CLICK HERE FOR THE PROFESSIONAL VERSION
Others also read

Also of Interest

Download the Manuals App iOS ANDROID
Download the Manuals App iOS ANDROID
Download the Manuals App iOS ANDROID
TOP