What is "hydrosalpinx"

n. A distally blocked Fallopian tube filled with serous or clear fluid.

A hydrosalpinx is a distally blocked fallopian tube filled with serous or clear fluid. The blocked tube may become substantially distended giving the tube a characteristic sausage-like or retort-like shape. The condition is often bilateral and the affected tubes may reach several centimeters in diameter. The blocked tubes cause infertility.

A fallopian tube filled with blood is a hematosalpinx, and with pus a pyosalpinx.

Hydrosalpinx is a composite of the Greek words ὕδωρ (hydōr - "water") and σάλπιγξ (sálpinx - "trumpet"); its plural is hydrosalpinges.