evaluated 84 patients who underwent surgery for bronchial carcinoid tumors and concluded that patients with a histopathological type exhibiting carcinoid tumors and no adverse prognostic factors such as lymph node metastases should be considered for conservative treatment or partial pneumonectomy (18); The MEN1 gene locus is on chromosome 11q13, and loss of heterozygosity (LOH) at this locus has been linked to the aetiology of sporadic pulmonary carcinoid tumours and is a distinctive genetic alteration in this tumour, it was noted (19–21). The gene discussed is MEN1; the disease is carcinoid tumor.