Enterolithiasis with imperforate anus

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Abstract
Enterolithiasis has been previously described as a plain film finding of rectovesical or rectourethral fistula in patients with anorectal malformation. Two cases of enterolithiasis with anorectal malformation are described in which the intraluminal nature of the calcifications was identified using ultrasound. The use of ultrasound for this purpose has not been previously reported to our knowledge. This simple, noninvasive technique permits antenatal differentiation between enterolithasis and meconium peritonitis in some patients and can suggest the prenatal diagnosis of rectourinary communication when enterolithasis is present. In addition, one of our cases occurred in a female. The entity of enterolithasis with inperforate anus in a female has not been previously reported.