A 31-year-old female patient accidentally found a bean-sized lump under the right buttock, causing slight pain when pressing. Ultrasound examination revealed multiple cystic nodules of varying sizes in the subcutaneous fat layer of the right buttock. The patient underwent right buttock mass resection and was diagnosed as foreign body granuloma according to the postoperative pathology and medical history. Five years ago, the patient received bilateral intramuscular injection of progesterone (10-15 mg once daily) into the buttocks for 3 months due to threatened miscarriage. Afterwards, no other medication was injected into the buttocks. Therefore, it was considered that the foreign body granuloma in her buttock was related to the injection of progesterone. Two months later, the patient underwent extended resection of soft tissue tumor under the gluteus maximus muscle of the left buttock, and the postoperative pathological results were the same as that of the first time.

A 31-year-old female patient accidentally found a bean-sized lump under the right buttock, causing slight pain when pressing. Ultrasound examination revealed multiple cystic nodules of varying sizes in the subcutaneous fat layer of the right buttock. The patient underwent right buttock mass resection and was diagnosed as foreign body granuloma according to the postoperative pathology and medical history. Five years ago, the patient received bilateral intramuscular injection of progesterone (10-15 mg once daily) into the buttocks for 3 months due to threatened miscarriage. Afterwards, no other medication was injected into the buttocks. Therefore, it was considered that the foreign body granuloma in her buttock was related to the injection of progesterone. Two months later, the patient underwent extended resection of soft tissue tumor under the gluteus maximus muscle of the left buttock, and the postoperative pathological results were the same as that of the first time.

According to the phenomenon that the curriculum of psychological health education for college students is theoretical,lack of experience and the teaching form is single,this research attempts to private a blended teaching which is based on the small private online course (SPOC) and experiential teaching.The content of mental health is divided into theoretical knowledge and experience knowledge.And the theoretical knowledge is taught through online teaching in the form of massive open online courses (MOOC),while the experiential knowledge is taught by pure experiential teaching in the classroom.The study has summed up 3 stages of learning mode:learning before class,teaching experience and reflection after class.This changes the single classroom theory teaching to students experience learning.Besides,formative evaluation is used as assessment methods,which has enhanced the effectiveness of the course and at the same time,it has also promoted the improvement of teachers' teaching level effectively.