What is the reason for the mass on the right side of the ovary?

Masses on the right side of the ovary may be caused by physiological cysts or pathological masses. Common causes include corpus luteum cyst, teratoma, ovarian cystadenoma, endometriosis cyst, ovarian malignant tumor, etc. It is recommended to seek medical treatment promptly for a clear diagnosis.

A corpus luteum cyst is a physiological structure formed after ovulation. It usually appears in the second half of the menstrual cycle. It appears as a unilateral ovarian echoless mass with a diameter of less than 5 cm. It may be accompanied by a slight feeling of bloating in the lower abdomen. Most of them disappear on their own within 1-3 menstrual cycles. Teratoma is a germ cell tumor. Fat, hair and other components can be seen in the mass. It grows slowly but has the risk of torsion. Ultrasound shows a mixed echo mass. It is common in women of childbearing age. Ovarian cystadenomas are divided into two types: serous and mucinous. The former are mostly single-chamber thin-walled cysts, while the latter are often multi-locular and larger in size, which may compress the bladder or rectum and cause abnormal urination and defecation.

Endometriosis cysts are chocolate cysts. The mass contains old blood and has a ground-glass echo on ultrasound. Patients often have a history of progressively worsening dysmenorrhea, which may affect reproductive function. Ovarian malignant tumors have irregular shapes and unclear boundaries, and may be accompanied by ascites and elevated CA125. They are common in perimenopausal women and require pathological examination for diagnosis.

Daily attention should be paid to observing the changes in the menstrual cycle, avoiding strenuous exercise to prevent the mass from torsion and rupture, and regular gynecological ultrasound review. If you have symptoms such as sudden severe abdominal pain, nausea and vomiting, or abnormal vaginal bleeding, you should seek emergency treatment immediately.