Uterine agenesis

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Failure of normal development of the mullerian ducts causes uterine agenesis or hypoplasia. Patients present with primary amenorrhea in adolescence. Agenesis or hypoplasia of any part of the genital tract (vagina, cervix, uterus, tubes) may occur either in isolation or, more, commonly, in combination. This relatively uncommon class of anomalies accounts for approximately 5% of mullerian duct anomalies. Vaginal agenesis is the most common subtype, and is often accompanied by uterine agenesis. 

Fig. 16.16. Class I. Uterine agenesis. Sagittal midline sonogram shows normal vagina, small (curved arrows) cervix (straight arrow), and absent uterine...

Agenesis of a unilateral mullerian duct causes a single banana-shaped uterus with a single fallopian tube. If the rudimentary horn is either noncommunicating or lacks a cavity, it will not be detected by HSG. Sonographic findings, which are often subtle and easily overlooked, include a small uterine cavity, an... 

Bilateral renal agenesis is part of Potter syndrome and is incompatible with extra-uterine life. At obstetrical US, no recognizable renal parenchyma is visible. At no time a bladder is demonstrated. Anamnios is the rule. 

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