Visceral Abnormalities – 27-Jul-2006 draft



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Common Carotid Trunk

Common carotid trunk




New







Common trunk that divides into the innominate and left common carotid arteries.

A common variant in rabbits.







Dilated

New



















Long

New



















Malpositioned

New



















Narrow

New



















Short

New



















Supernumerary artery

New













Pulmonary artery

Pulmonary artery

Absent

New



















Malpositioned branch

10230













Pulmonary trunk

Pulmonary trunk

Atretic

10233

Thread-like







May be total or partial.







Dilated

10231



















Malpositioned origin

New







Outlet from heart displaced










Narrow

10232










May be associated with Tetratology of Fallot







Retroesophageal

10234










Pulmonary trunk may pass behind trachea as well as esophagus







Right-sided

10235



















Vestigial

New













Subclavian artery

Subclavian artery

Absent

10236



















Branching variation

New







Variation in the arrangement of arteries arising from subclavian artery

May be further specified by location (position/laterality of branches)







Dilated

10237



















Malpositioned origin

10238










Includes right subclavian artery originating from aortic arch (i.e, absent innominate)







Narrow

10239



















Retroesophageal

10240










Subclavian artery may pass behind trachea as well as esophagus

Umbilical vessels

Umbilical artery

Absent

New







Fewer than 2 arteries










Bilateral

New










Normal in rabbits; see Appendix D for species differences







Transposed

New










See Appendix D for species differences




Umbilical vein

Absent

New



















Transposed

New













Trachea

Cartilage rings

Absent

New







Absence of all rings










Branched

New



















Fused

New



















Interrupted

New



















Misaligned

New



















Reduced number

New
















Trachea

Absent

New



















Atretic

New










May be total or partial







Dilated

New










May be generalized or localized







Diverticulum

New



















Fluid or other abnormal material

New










May be an artifact







Malpositioned

10241



















Narrow

10242










May be generalized or localized




Tracheoesophageal fistula




10243







Communication between esophageal and tracheal lumen




Esophagus

Esophagus

Absent

10244



















Atretic

10245










May be total or partial.







Dilated

New










May be generalized or localized.







Diverticulum

10246



















Fluid or other abnormal material

New










May be an artifact







Malpositioned

10247



















Narrow

10248










May be generalized or localized.



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