Comparison of the diagnostic efficiency between the O-RADS US risk stratification system and doctors’ subjective judgment

Table 3 Ultrasonographic characteristics of the masses

Ultrasonographic characteristic		Pathological results
Simple unilocular cyst, without solid component		Simple cyst
Unilocular cyst, with irregular inner wall (< 3 mm height)		Borderline serous papillary cystadenoma
Unilocular cyst, with solid component (≥ 3 mm height) ^a		Endometrioid adenocarcinoma
Multilocular cyst, without solid component (≥ 3 mm height) ^a		mucinous cystadenoma
Multilocular cyst, with solid component (≥ 3 mm height) ^a		adenocarcinoma
Solid lesion, with smooth outer contour		struma-ovarii
Solid lesion, with irregular outer contour		serous carcinoma
Classic Benign Lesions	Not simple, unilocular cyst, with thick wall and without solid component	corpus luteum cyst
	Not simple, unilocular cyst, with opaque echo within the cyst and without solid component	ovarian endometriosic cyst
	Not simple, unilocular cyst, with high echo clumps or strong echo spots within the cyst and without solid component	mature cystic teratoma
	Strip shaped cyst with incomplete separation	hydrosalpinx

^asolid component includes a papillary projection or solid component that is not a papillary projection

ISSN: 1471-2342