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At least 253 records · Page 14Linked to original sources
PubMed1983

Prone cross-table lateral view: an alternative to the invertogram in imperforate anus.

The prone cross-table lateral radiograph provides equal or sometimes better information, compared to the invertogram, for demonstration of the level of rectal atresia in neonates. Easy positioning, better cooperation of the patient, elimination of the effect of gravity, and better delineation of the rectal gas shadow are the advantages of the prone lateral view. Among the 45 cases compared, equal findings were noted in 37, but in eight babies the level of rectal atresia was more caudal in the prone radiograph than in the invertogram.

Anus, Imperforate↗
PubMedDate not supplied

Anal and ano-urogenital malformations: a histopathological study of "imperforate anus" with a reconstruction of the pathogenesis.

Histopathological information about "anorectal malformations" is scarce and the pathogenesis still controversial. Autopsy specimens of 20 human fetuses and newborns with "main" types of the disorder were studied histologically. Supplemented with surgical-anatomical data from the literature and with information from our own and earlier embryological research in animal models as well as from recent observations on the normal development of the human perineum, the study allowed for a new reconstruction of the pathogenesis of the disorder. The histological analysis of the malformations in human fetuses and newborns showed a ventralward deviation of the anal canal as the principal deformity. Ano-urogenital communications and differently structured ectopic anocutaneous canals issued from anywhere between the bladder and the vestibular/urethral orifice (female urethra excluded) and between the orifice and the usual site of the anus, respectively, or they ended blindly, but with a suggestion of lost communication. They occurred isolated or in association with other primary or secondary regional anomalies. Patho-embryological data from animal models revealed that the deviation was caused by defective development of the dorsal cloaca and not by disturbances in a series of fusion processes inside and outside the cloaca, as is currently believed. This mechanism fits well into recent adjustments of ideas about the normal development of the perineum. The cause of the defect is still obscure, but a malfunctioning of cells ingressing from an end-stage primitive streak that affects the dorsal side of the prospective cloaca appears most likely. The data collected permit a new reconstruction of the pathogenesis of anal and ano-urogenital malformations.

Abnormalities, Multiple↗
PubMed1959

Imperforate anus.

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Anal Canal↗
PubMed1999

Unilateral tibial aplasia, pre-axial polysyndactyly, vertebral anomalies and imperforate anus.

Tibial hemimelia is a rare malformation that can be isolated or found with other skeletal abnormalities. We describe a fetus with unilateral tibial aplasia, ipsilateral pre-axial polysyndactyly and femoral hypoplasia, ventriculomegaly, anal atresia and rib and vertebral anomalies. We believe that this combination of malformations has not previously been described.

Abnormalities, Multiple↗
PubMed1979

Imperforate anus.

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Anus, Imperforate↗