85% of NETs originate in the gastrointestinal tract, 10% in the lungs mainly as bronchial carcinoids and the rest in the larynx, thymus, kidney, ovary, prostate, and skin.
El 85% de los TNE se originan del tracto gastrointestinal, en el 10% de los pulmones, principalmente como carcinoide bronquial y el resto en laringe, timo, riñón, ovario, próstata y piel.