MEN1 and multiple endocrine neoplasia: The DutchMEN study group reported that patients with clinical MEN1 who lack a specific gene mutation usually have a later insurgence of disease, often developing two lesions, with a life expectancy similar to that of the general population; their family history is usually null when researching for previous cases of MEN; finally, they frequently show uniglandular pHPT [10, 11].