[Leydig cell tumor in a patient with type I multiple endocrine neoplasm: study of a case and review of the literature].
Presentation of the case of a 42-year old male patient with Type I Multiple Endocrine Neoplasia, known as the Wermer Syndrome, who developed Leydig's cells tumour. No association was found between both processes and therefore a fortuitus, though worthwhile mentioning given the characteristics and hormonal implications of both pathologies, can be presumed.