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Radiology News


Inferior Rectus Anomalies-MRI

8 yr old child with inability to look down   referred for MRI with clinical suspicion of inferior rectus anomaly. MRI shows hypoplasia of right inferior rectus belly compared with other muscles , possible accessory extraocular muscle just above it, with absence of left inferior rectus. Case submitted by Dr MGK  Murthy.

Teaching points

  • All extraocular  muscles have been described to be absent congenitally, with most common being inferior recti, superior recti, and superior oblique , in that order
  • Presence of accessory extraocular muscles with hypoplasia /aplasia  has recently been described. Associated with craniofacial  dysostosis, Neurofibromatosis , though isolated cases are common
  •  Symptoms could be Hypertropia on the affected side, with limited depression of more affected side 

Inferior Rectus Anomalies-MRI Reviewed by Sumer Sethi on Sunday, August 07, 2011 Rating: 5

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