Lung and thymic carcinoids: ESMO Clinical Practice Guidelines for diagnosis, treatment and follow-up☆

The latest World Health Organization (WHO) classification from 2015 has grouped lung and thymic neuroendocrine tumours (NETs) (named neoplasm in the digestive WHO classification) within one unique group but confirmed their subdivision into four main categories: typical carcinoid (TC), atypical (AC), small cell cancer (SCLC) large carcinoma (LCNEC).1 These guidelines are restricted to (LC) (ThC). Patients with carcinoids generally younger, have a better prognosis do not strong association smoking, as compared SCLC LCNEC.