Hemolysed blood-filled cysts, arising from endometrial lesions, forming on the surface of the ovarian tissue.
An ovarian or ovarian cyst is usually a lesion in the ovary that causes the ovary to fill with serous fluid, blood or other omental contents.
The article deals with the hormone appearing in the early stages of pregnancy and changes in its concentration. Medical US in correlation with HCG concentration is also discussed.