After giving birth to a child, there are lumps in the armpits, which are mainly caused by the imbalance of estrogen and progesterone secretion in the patient’s body and the phenomenon of paratesticular breasts, the longest occurrence of paratesticular breasts is in the armpits, which can be left unattended to, and may gradually subside after the end of the lactation period due to the normal secretion of estrogen and progesterone in the body and the inability to subside, then it is recommended that they be surgically removed in a timely manner. Lipoma is a benign tumor formed due to the large accumulation of fat particles, which can be left untreated if it does not affect the patient’s daily life, and can be treated by surgery if it affects the patient’s daily life.