Ultrasonographic examination was carried out in a cow wiyh an ovarian absce
ss. Real time ultrasound scanning using a 7.5 MHz linear probe per rectum r
evealed an active left ovary with Follicles of up to 11 mm in diameter and
an enlarged right ovary measuring 6 x 6 cm, with a mass of 4 x 3 cm. The ma
ss had varied echotexture, a thick hyperechoic boundary and a hypoechoic ce
ntre with echoic foci. It was tentatively diagnosed as an ovarian tumour or
abscess. After ovariectomy, grossly the right ovary measured 6 x 6 x 5 cm
and on cutting cheesy pus oozed out. The abscess was completely localised w
ithin the ovary, 4 cm in diameter and encapsulated thickly. On bacteriologi
cal examination Staphylococcus spp. was isolated. This is a rare case of ov
arian abscess.