Ja. Schnorr et al., HYPERREACTIO LUTEINALIS ASSOCIATED WITH PREGNANCY - A CASE-REPORT ANDREVIEW OF THE LITERATURE, American journal of perinatology, 13(2), 1996, pp. 95-97
Hyperreactio luteinalis is a condition associated with bilateral and,
in rare cases, unilateral ovarian enlargement due to theca lutein cyst
s. Hyperreactio luteinalis is a benign condition, usually found incide
ntally at cesarean section, which can appear anaplastic and lead to un
necessary ovarian resection. A 21-year-old Hispanic woman, G2P1, prese
nted at 19 weeks with a singleton pregnancy, bilaterally enlarged ovar
ies, and a normal beta hCG. Over the next four months, her ovaries inc
reased 75% in size with the right ovary becoming entrapped in the pelv
is. The patient underwent a primary low transverse cesarean section. T
he ovaries had an anaplastic appearance and on frozen section revealed
multiple benign theca lutein cysts. There are 51 reported cases of hy
perreactio luteinalis associated with a normal pregnancy in the litera
ture. It is estimated that approximately 60% of the cases of hyperreac
tio luteinalis unassociated with trophoblastic disease occur with norm
al singleton pregnancy. There are multiple benign ovarian lesions incl
uding hyperreactio luteinalis that can mimic ovarian neoplasms. Accord
ingly, it is important to exclude these from the differential diagnosi
s via a wedge biopsy and frozen section to avoid unnecessary surgical
excision.