Patients rarely require drains after adrenal surgery; however, if the surgeon thinks it is necessary, an abdominal drain will be placed. Drains are more often required after open adrenalectomy than after laparoscopic adrenalectomy. Drains are relatively easy to take care of, and the output is recorded on a daily basis. Once the output decreases to a certain level, the drain will be removed. Removal of the drain is not particularly painful. It is more of a strange sensation. In general, the drain will be removed several days after surgery.
For more information go the endocrinediseases.org: Adrenal Glands: How is adrenal surgery performed?