EURORAD ESR

Case 9013

Malignant GIST of the jejunum mimicking periappendiceal abscess

Author(s)
Pitta X, Karadimou V, Makridis C, Karakatsanis A,
Kamas A, Termentzis G
 
Patient
male, 64 year(s)
 
 
  • Figure 1
    US examination

    Ill-defined mass with heterogeneous echogenicity in right iliac fossa.

     
    Area of Interest: Gastrointestinal tract; Imaging Technique: Ultrasound;
     
     
  • Figure 2
    Contrast-enhanced CT examination
     

    Heterogeneous mass with enhancing borders and irregular central areas of fluid and gas. No significant lymphadenopathy.

     

    Heterogeneous mass with enhancing borders and irregular central areas of fluid and gas. No significant lymphadenopathy.

     
     
     
  • Figure 3
    MRI examination
     

    Axial T1-w after iv administration of contrast medium demonstrating a mass with heterogeneous enhancement in right iliac fossa.

     

    Sagittal T2-w demonstrating a soft tissue mass with areas of central necrosis and gas

     
     
     
  • Figure 4
    Macroscopic view of resected tumour

    Invasion of small bowel wall (jejunum) and a central zone of haemorrhagic necrosis are noticed.

     
     
     
  • Figure 5
    Microscopic view of resected tumour
     

    High cellularity and many mitotic figures and invasion of the small bowel wall. Haematoxylin & Eosin stain, original magnification × 200.

     

    C-kit (CD117) strongly positive.

     
     
     
Ill-defined mass with heterogeneous echogenicity in right iliac fossa.
 
Heterogeneous mass with enhancing borders and irregular central areas of fluid and gas. No significant lymphadenopathy.
 
Heterogeneous mass with enhancing borders and irregular central areas of fluid and gas. No significant lymphadenopathy.
 
Axial T1-w after iv administration of contrast medium demonstrating a mass with heterogeneous enhancement in right iliac fossa.
 
Sagittal T2-w demonstrating a soft tissue mass with areas of central necrosis and gas
 
Invasion of small bowel wall (jejunum) and a central zone of haemorrhagic necrosis are noticed.
 
High cellularity and many mitotic figures and invasion of the small bowel wall. Haematoxylin & Eosin stain, original magnification × 200.
 
C-kit (CD117) strongly positive.
 
 
 
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