EURORAD ESR

Case 14455

Not Your Every Day Hydatid Cyst

Author(s)
Niza J;Mascarenhas V; Lerias S; Silva J;

Prt. Eng. Carlos Manito Torres nº1 4ºDrt 2900-190 Setúbal, Portugal; Email:niza.joao@gmail.com
 
Patient
male, 53 year(s)
 
 
  • Figure 1
    Ultrasound with colour doppler

    Ultrasound axial image of a multicystic lesion in the thigh with simple cysts and some with ecogenic debris inside. Notice the absence of Doppler signal.

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: Ultrasound-Colour Doppler; Procedure: Education; Special Focus: Cysts;
     
     
  • Figure 2
    MR T2-weighted images

    MRI T2-weighted images on coronal (A) and sagittal (B) planes showing a high signal multicystic lesion separated by thick septa, with no solid component on the right adductor muscles

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: MR; Procedure: Education; Special Focus: Cysts;
     
     
  • Figure 3
    MR T1-weighted images

    MRI axial T1-weigthed image (A) and fat supressed T1-weighted image (B) show no loss of signal intensity, which is demonstrative of absence of macroscopic fat within the lesion

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: MR; Procedure: Education; Special Focus: Cysts;
     
     
  • Figure 4
    Post contrast-enhanced MR

    Post contrast-enhanced axial T1 FAT-SAT MR images only showed enhancement of the peripheral capsule

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: MR; Procedure: Education; Special Focus: Cysts;
     
     
  • Figure 5
    MR - Daughter Cysts

    MRI axial fat supressed T2-weighted images demonstrating the presence of daughter cysts adjacent to the lesion

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: MR; Procedure: Education; Special Focus: Cysts;
     
     
  • Figure 6
    Post-Surgery Histopathology
     

    Low-power view of fragment stained with hematoxylin-eosin shows a cystic space with an outer rim of fibrosis suggestive of an helminthic parasitic infections

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: PACS; Procedure: Surgery; Special Focus: Cysts;

    High magnification of fragment stained with hematoxylin-eosin shows the host chronic inflammatory response in cyst wall

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: PACS; Procedure: Surgery; Special Focus: Cysts;

    Fragment of a cystic space adjacent to skeletal muscle of the thigh stained with hematoxylin-eosin

     
    Area of Interest: Musculoskeletal soft tissue; Imaging Technique: PACS; Procedure: Surgery; Special Focus: Cysts;
     
     
Ultrasound axial image of a multicystic lesion in the thigh with simple cysts and some with ecogenic debris inside. Notice the absence of Doppler signal.
 
MRI T2-weighted images on coronal (A) and sagittal (B) planes showing a high signal multicystic lesion separated by thick septa, with no solid component on the right adductor muscles
 
MRI axial T1-weigthed image (A) and fat supressed T1-weighted image (B) show no loss of signal intensity, which is demonstrative of absence of macroscopic fat within the lesion
 
Post contrast-enhanced axial T1 FAT-SAT MR images only showed enhancement of the peripheral capsule
 
MRI axial fat supressed T2-weighted images demonstrating the presence of daughter cysts adjacent to the lesion
 
Low-power view of fragment stained with hematoxylin-eosin shows a cystic space with an outer rim of fibrosis suggestive of an helminthic parasitic infections
 
High magnification of fragment stained with hematoxylin-eosin shows the host chronic inflammatory response in cyst wall
 
Fragment of a cystic space adjacent to skeletal muscle of the thigh stained with hematoxylin-eosin
 
 
 
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