Patient/caregiver was instructed upon therapeutic uses and mechanism of action of Megestrol as follows: Megestrol is a synthetic progesterone sex hormone. Megestrol can be used as an antineoplastic medication, which brings about hormonal changes contributing to inhibitory effects on the growth of tumor masses in the breast and uterine tissues. Excessive exposure to estrogen in women is considered to be an important factor stimulating the growth of established tumors along with development of new tumors [...]