EURORAD ESR

Case 9500

An unusual cause of acquired divergent strabism

Author(s)
Medeot Alessandro, Pagnan Lorenzo, Pozzi Mucelli Fabio, Cova Maria Assunta
UCO di Radiologia Cattinara, Trieste, Italy. Azienda Ospedaliero-Universitaria Ospedali Riuniti di Trieste, Trieste, Italy

Via Di Vittorio 26/2 34079 Staranzano (GO), Italy; Email:radmed2@gmail.com
 
Patient
female, 27 year(s)
 
 
  • Figure 1
    T2W sequence

    Coronal plane: small round isointense mass placed in the right skull base cisterns (arrow) tightly contiguous to the superior cerebellar artery.

     
    Area of Interest: Neuroradiology brain; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Neoplasia;
     
     
  • Figure 2
    T2W DRIVE sequence

    Axial plane: the isointense lesion (arrow)involves the sub-arachnoid portion of the right oculomotor nerve (red arrow-heads) which appears thinner than the controlateral nerve (yellow arrow-heads).

     
    Area of Interest: Neuroradiology brain; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Neoplasia;
     
     
  • Figure 3
    TOF secquence

    Axial plane: absence of flow related signal inside the lesion.

     
    Area of Interest: Neuroradiology brain; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Neoplasia;
     
     
  • Figure 4
    T1W after cm iv administration

    Axial plane: after cm administration significant enhancement of the small lesion.

     
    Area of Interest: Neuroradiology brain; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Neoplasia;
     
     
  • Figure 5
    T1W after cm iv administration

    Coronal plane: the lesion (arrow) is located in the subarachnoid space lying between the superior cerebellar artery and the posterior cerebral artery.

     
    Area of Interest: Neuroradiology brain; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Neoplasia;
     
     
  • Figure 6
    T1W after cm iv administration

    Sagittal plane: the lesion (arrow) appears contiguous to the ventral surface of mesencephalus, below the posterior communicating artery.

     
    Area of Interest: Neuroradiology brain; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Neoplasia;
     
     
Coronal plane: small round isointense mass placed in the right skull base cisterns (arrow) tightly contiguous to the superior cerebellar artery.
 
Axial plane: the isointense lesion (arrow)involves the sub-arachnoid portion of the right oculomotor nerve (red arrow-heads) which appears thinner than the controlateral nerve (yellow arrow-heads).
 
Axial plane: absence of flow related signal inside the lesion.
 
Axial plane: after cm administration significant enhancement of the small lesion.
 
Coronal plane: the lesion (arrow) is located in the subarachnoid space lying between the superior cerebellar artery and the posterior cerebral artery.
 
Sagittal plane: the lesion (arrow) appears contiguous to the ventral surface of mesencephalus, below the posterior communicating artery.
 
 
 
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