Whether teratoma 26mmx22mm is serious or not should be determined by combining the nature of teratoma, patient’s age, fertility requirements, etc. Most of the teratoma patients are recommended to be treated immediately after diagnosis, regardless of the size, benign or malignant nature of the teratoma. Early clinical symptoms of teratoma are not obvious and are often detected by ultrasonography. Clinically, teratomas in most patients are benign teratomas. Benign teratoma can be determined according to the patient’s age, reproductive needs, contraindications to surgery, etc., to determine whether the operation and the scope of the operation, and its postoperative prognosis is better, the chance of recurrence is small. As for patients with malignant teratoma without contraindications to surgery, in order to prevent further spread of cancer cells, it is best to operate as soon as possible, and after surgery, regular ultrasound and other examinations are also needed to observe whether there is any residual growth of cancer cells. After discovering teratoma, patients should go to the hospital in time and take active treatment according to the doctor’s instruction.