Endocrine Oncology is a combination of Endocrinology & Oncology which deals with hormone producing tumours. These tumours may be of different types; Gastro (midgut carcinoids, appendix carcinoids, etc.), Pulmonary ( Typical and atypical bronchial carcinoids), Pancreatic (Insulinoma & gastrinoma), and tumour syndromes like Multiple endocrine neoplasia.