Dermatoscopy in the Diagnosis of Skin Metastases from Breast Cancer

Introduction. Skin metastases are the result of skin infiltration caused by the proliferation of cells of remotely located malignant tumors occurring with a frequency of 0.6–10.4 % in various oncological processes. They may be a sign of progressive neoplasm or a manifestation of newly diagnosed cancer. Due to a high variability of clinical manifestations leading to misdiagnoses, a limited number of articles describe clinical and dermatoscopic signs of solid tumors metastatic nodes. Aim: to analyze the clinical and dermatoscopic features of skin metastases from breast cancer.

Materials and methods. A female patient has complaints of slight pain and itching in the lesions area on the scalp. According to her medical history, a right mastectomy was performed for right breast cancer in 2012, followed by hormone therapy willfully discontinued by the patient. Given the uncommon localization limited with the scalp, the differential diagnosis was made with a spectrum between a cylindroma, multiple basal cell cancer and metastatic carcinoma. A biopsy was carried out to confirm the diagnosis. Results and examination. The pathological skin process revealed itself through multiple nodes up to 2 cm in diameter, pinkish in color, dense, painless on palpation, poorly demarcated. Dermatoscopically: polymorphic vessels on an erythematous background, chrysalis-like structures. Breast cancer metastases were verified by histological and immunohistochemical examination.

Conclusion. Skin metastases may be the first sign of cancer recurrence. Dermatoscopy can facilitate differenting them from other skin diseases. Density and diameter of pathological vessels are prognostically significant. Ifdetected lesions do not fit the standard pattern of skin neoplasms, histological verification of the diagnosis is recommended to be carried out.

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