The specimen is a greatly enlarged uterus; the endometrial cavity is distorted by a circumscribed
multicystic tumour with more solid areas at the periphery. The histology was that of an endometrial
stromal tumour; a rate lesion that is regarded as arising in the endometrial stroma and to be of
low-grade malignancy. Hart & Yoonessi, 1977, Obstetricas and Gynaecology, 49 393.
This woman, at the age of 41, presented with a heavy feeling in the lower abdomen and
was noted to have an abdominal mass the size of a 24 week pregnancy. She had had heavy periods
and at the time of examination the haemoglobin was 7.4 grams.