**7.2. Hydrocolpos**

Hydrocolpos is the accumulation of fluid in the vagina. When the fluid is observed on the vagina and the uterine body, the condition is called hydrometrocolpos. These diseases are caused by the persistence of the urogenital sinus or cloaca malformations [23]. The presence of a cystic mass in the presacral area, containing an anechoic fluid (suggesting urine) or sediment content, should guide the clinician to a diagnosis of urogenital sinus persistence [1, 2, 25].
