Schistosomus Reflexus

Todayโ€™s path rounds are on ๐ฌ๐œ๐ก๐ข๐ฌ๐ญ๐จ๐ฌ๐จ๐ฆ๐ฎ๐ฌ ๐ซ๐ž๐Ÿ๐ฅ๐ž๐ฑ๐ฎ๐ฌ! Another weird congenital malformation for you weirdos out there that like em.

๐–๐ก๐š๐ญ ๐ข๐ฌ ๐ข๐ญ?
๐’๐œ๐ก๐ข๐ฌ๐ญ๐จ๐ฌ๐จ๐ฆ๐ฎ๐ฌ ๐ซ๐ž๐Ÿ๐ฅ๐ž๐ฑ๐ฎ๐ฌ is a rare and fatal congenital disease where the fetusโ€™ spine is ๐ซ๐ž๐Ÿ๐ฅ๐ž๐ฑ๐ž๐ backward, meaning that spine is curved away from the legs. This is also associated with failure of the abdominal wall to close, so the guts are hanging out of the fetus. This gives the fetus an โ€œinside outโ€ appearance. So weird.

๐–๐ก๐จ ๐ ๐ž๐ญ๐ฌ ๐ข๐ญ?
This condition is primarily seen in ruminants, like cattle, sheep and goats.

๐–๐ก๐š๐ญ ๐œ๐š๐ฎ๐ฌ๐ž๐ฌ ๐ข๐ญ?
It is suspected that schisotosomus reflexus may be genetically linked, based on some preliminary studies analyzing pedigrees. However, no definitive cause has been identified.

๐–๐ก๐ฒ ๐ข๐ฌ ๐ญ๐ก๐ข๐ฌ ๐š ๐ฉ๐ซ๐จ๐›๐ฅ๐ž๐ฆ?
These fetuses frequently cause ๐๐ฒ๐ฌ๐ญ๐จ๐œ๐ข๐š (difficulty in giving birth), because they arenโ€™t shaped normally and often have their limbs in strange positions. These fetuses are frequently dead at the time of delivery, so they can be removed by ๐Ÿ๐ž๐ญ๐จ๐ญ๐จ๐ฆ๐ฒ (cutting up the dead fetus while it is inside the uterus using a cutting wire) or by Caesarian section.

๐๐ก๐จ๐ญ๐จ๐ฌ
1-2) Examples of schistosomus in calves.
3) Schistosomus in a lamb.
4) Schistosomus in a goat kid.
5) Schistosomus in a piglet.

๐’๐จ๐ฎ๐ซ๐œ๐ž๐ฌ
Line, S. Congenital and inherited anomalies in animals. Merck Veterinary Manual 2020.

Photo 1 courtesy of University of Calgary Diagnostic Services Unit.
Photos 2-5 courtesy of Noahโ€™s Arkive.

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