Un nuevo caso de NEM 2B

Multiple endocrine neoplasia (MEN) syndrome is an autosomal dominantly inherited disease characterized by the development of endocrine tumors. The most common component of MEN 2 is medullary thyroid carcinoma. This syndrome is associated with protooncogene RET (chromosome 10) mutation. Genetic screening of members of patients' families is cruzial due to its potential severity. We describe a patient with NEM 2B syndrome who presented with a thyroid tumor and morphological changes in his lips. We highlight the importance of clinical suspicion for correct diagnosis and appropriate treatment.