MEN1 and multiple endocrine neoplasia type 1: Analysis of the MEN1 gene should be offered and extended to patients with atypical presentation of MEN-1, cases of suspected MEN-1 that do not meet clinical criteria (e.g. HPT association and thymic carcinoid tumour), young patients diagnosed with HPT for adenoma (<30 years) or parathyroid hyperplasia (<40 years) or multifocal pancreatic NETs.