METÁSTASIS CUTÁNEA DE CARCINOMA DIFERENCIADO DE TIROIDES. A PROPÓSITO DE UN CASO.

Thyroid cancer (CT) as well as other types of malignant tumors have the ability to invade and infiltrate other tissues both contiguous and distant tissues and organs producing what is known as metastasis (MT). This is a characteristic of the majority of cancerous tumors, and the mechanism by which they are carried out occurs in different ways depending on the histological type of the tumor, as well as its own dissemination characteristics, whether lymphatic, hematogenous, nervous or local invasion.Speaking particularly of thyroid cancer (CT) and being more specific papillary cancer (CPT), it is the malignant histological variant that has the most prevalence and incidence in this gland, in addition it is the thyroid cancer that has the best prognosis and more treatment alternatives due to their slow growth pattern, and due to their low capacity to produce distance metastases (MT) presented in less than 10% of patients with this diagnosis.Despite this low rate of metastatic disease, this pathology has presented a remarkable growth in its prevalence, tripling in the last 30 years, which has also caused an increase in the prevalence of metastatic cases (MT) due to this neoplasia.When there is metastatic disease of papillary thyroid carcinoma (CPT), it is most often located in lymph tissue followed by lung and bone tissue. The spread of this type of cancer to other sites is uncommon, and the skin is even more unusual. For this reason, the case of a 74-year-old female patient is presented, with a history of diagnosis of differentiated thyroid carcinoma undergoing several previous surgical interventions, which presents a dermal lesion at the pre-sternal level, whose post-resection histopathological study was compatible with metastatic skin spread of this type of cancer.