Hi, chocolate cysts occur in all age groups but most common in child bearing age group like yourself. In some women it coexists with hypothyroidism
(low levels of thyroid hormone).
If the cysts persist beyond 2 to 3 menstural cycles, then it needs to be investigated to rule out other serious possibilities like ovarian cancer
especially if any other member in the same family had suffered from ovarian cancer.
CA 125 & CEA are tumor
markers. Both CEA (carcino embryonic antigen) & CA 125 (cancer antigen) are increased in many types of cancers like ovarian cancer. But it may be false positive as they are also increased in many other non cancer conditions like inflamation.
Very high values of CEA may be suggestive of cancer. CA 125 test is not an accurate test to detect cancer in premenopausal women like you, but it can differentiate chocolate cysts (endometriosis
cysts) from other cysts