Table 2.

Differential table of obstructed hemivagina with ipsilateral renal agenesis (OHVIRA)

	X-ray	Pelvic US	CT	MRI	Contrast enhancement
OHVIRA	Absent renal outline suggesting diagnosis	Pelvic fluid collection contiguous with the endocervix	Hypo/hyper dense pelvic fluid collection, absent ipsilateral kidney	Iso/low T1, high T2 signal pelvic fluid collection contiguous with the endocervix; didelphic uterus; Ipsilateral renal agenesis.	None unless infected
Cystic ovarian Malignancy	NA	Multiseptated pelvic mass with internal flow	Fluid/soft tissue density septated pelvic mass	Multiloculated low/high T1, areas of high T2 signal.	Enhancing soft tissue components
Pelvic abscess	NA	Heterogeneous echogenic pelvic mass with peripheral flow	Fluid density pelvic mass, kidneys present	Low T1, high T2 signal pelvic mass with with/without loculations	Peripheral enhancement
Ovarian cyst	NA	Anechoic fluid verses fluid with low level echoes, consistent with/hemorrhage	Fluid density pelvic mass, kidneys are present	Iso/low T1, high T2 signal pelvic mass	None
Pyosalpinx	NA	Tubular hyperechoic pelvic mass	Tubular fluid density pelvic mass, kidneys present	Iso/low T1, high T2 signal tubular pelvic mass; kidneys present	None to mild peripheral enhancement
Hydrosalpinx	NA	Tubular hypoechoic pelvic mass	Tubular hypodense pelvic mass, kidneys present	Tubular low T1, high T2 signal pelvic mass. Kidneys are present	None