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- confusion con quistes ovaricos y Dx    The diagnostic tests include several imaging studies, plain radiograph shows the curved appearance of the residual sacrum, scalloped beneath the defect with an appearance of scimitar sacrum, is considered as an almost pathognomonic finding, and is present in 50% of cases.\cite{3335662} Abdominal ultrasound is usually the first test performed, it  reveals the presence of the intra-abdominal cystic abnormality,is usually the first test performed,  careful examination should be made to avoid misdiagnosis as an ovarian cyst [4] as happened with our patient, and has been described in other reports.\cite{16673368}\cite{23486628}  > ultrasound, myelography, barium enema, CT, excretory urography, and MRI.