Unusual cutaneous metastatic carcinoma

Area of Science:

• Oncology
• Dermatology
• Pathology

Background:

• Cutaneous metastases typically originate from breast, lung, or melanoma.
• Metastases to the skin from other visceral carcinomas are uncommon, often indicating advanced disease and a poor prognosis.

Observation:

• This report details six cases of nonmammary, nonpulmonary carcinoma metastatic to the skin.
• Patients were predominantly elderly, presenting with advanced disease at the time of skin metastasis diagnosis.

Findings:

• Primary tumor sites in these rare cases included the thyroid, esophagus, biliary tract, ovary, and prostate.
• The study highlights the diversity of primary origins for cutaneous metastases beyond common sites.

Implications:

• Increased awareness of these rare presentations is crucial for accurate pathological and clinical diagnosis.
• Recognizing unusual cutaneous metastases can improve patient management and prognostic assessment in oncology.