ELL and multiple endocrine neoplasia type 1: The fact that mutations in MEN-1 are found in non-functioning PNC is not surprising when considering that non-functioning PNC are common in patients with multiple endocrine neoplasia type 1 (MEN-1) and higher morbidity and mortality are associated with MEN-1, not to mention that the average life expectancy for patients with these tumors was lower than that of patients with MEN-1 who did not present with PNC tumors.