Giant ovarian tumors are rare, but comprise both a clinical as well as
a surgical challenge. During the past two decades only 20 cases of ov
arian tumors weighing 20 kg or more have been reported. We present a n
ew case, where a giant benign ovarian cystadenoma weighing 28 kg, mask
ed by obesity, was removed. Pathology, complications and treatment of
such tumors is discussed. Intact removal and pre-/intra operative drai
nage of such tumors are equally good as treatment of choice and each c
ase must, therefore, be considered individually. The overall mortality
rate in treating such tumors has decreased markedly during the past c
entury. We recommend abdominal ultrasound scan for diagnosis, which sh
ould be kept in mind in severe obesity, especially when disproportiona
te.