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Skin Cancers of the Hand and Upper Extremity

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Skin cancers represent the most common primary malignancies of the hand. They typically present as painless lesions on areas of high sun exposure, such as the dorsum of the hand and upper extremity. The most common malignancy is squamous cell carcinoma, followed by basal cell carcinoma and melanoma. The key to successful treatment is early and accurate diagnosis and treatment. Unlike open biopsies, which are indicated for deep soft tissue and bone lesions, biopsies for skin cancer can be performed under local anesthesia in the office setting in the form of shave or punch biopsies. A number of nonsurgical treatment options are available for treatment. However, when surgical excision is indicated, appropriate margin resections are dictated by the grade and stage of the malignancy.

Section snippets

Diagnosis

The initial step in diagnostic evaluation of a potential skin cancer of the upper extremity should be a biopsy. Unlike open biopsies for deep soft tissue and bone lesions, biopsies for skin cancer can be performed under local anesthesia in the office setting. Often, shave biopsies are sufficient; however, a punch biopsy should be considered for indurated, atrophic, and/or pigmented lesions.

A shave biopsy can be performed by infiltrating the lesion locally with lidocaine, with or without

Squamous Cell Carcinoma

Squamous cell carcinoma makes up approximately 20% of all skin cancers; it is often located in areas of intense ultraviolet light or sun exposure. There are approximately 200,000 new cases of SCC each year. Risk factors include fair skin, cumulative over-exposure to ultraviolet radiation, advancing age, outdoor vocation, and sunnier geographic locations. The hand and upper extremity are at risk for SCC development; however, SCC is most often found on the head and neck.5 Other causes that place

Basal Cell Carcinoma

Basal cell carcinoma (BCC) makes up about 80% of all skin cancers, making it the most common type of cancer and the most common type of skin cancer. Ultraviolet exposure is thought to be the most common cause. Despite this, the hand and upper extremity are not the most common locations for these lesions, as they make up only about 10% of BCCs. The most common locations for BCCs are the head and trunk, making up over 75% of these lesions.37 Basal cell carcinomas tend to occur after the fourth

Melanoma

Melanoma is an aggressive, cutaneous malignancy for which early detection and intervention are essential for prognosis and survival. The incidence of melanoma is rising at a faster rate than that of any other cancer, and it is now the most common form of cancer for young adults aged 25 to 29 and the second most common form of cancer for young people 15 to 29 years old.53 However, most melanomas are diagnosed in white males over the age of 50.54 There are 4 major types of melanoma, based on

Merkel Cell Carcinoma

Merkel cell carcinoma (MCC) is extremely uncommon; however, when it does arise, it occurs in sun-exposed areas. Due to the limited number of reported cases, it is difficult to state the proportion arising on the upper extremity; however, one recently published review65 cited that about 20% arise on the upper extremities, and another recently published review66 of 875 cases cited about 40% arising on the extremities, with a mean age of 68 years. The mortality associated with MCC was found in

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