Histology Course A III 22 Department of Pathology, University of Zurich Histology Course

A III 22 ganglion cyst Alcianblue  
  ICD-10: M67.4
43-year-old female exhibited at the fibular side of the left knee a ‘cyst’ of taut-elastic consistency. Excision was performed.
- Two fragments of partly dense connective tissue are shown.
- Focal myxoid degeneration with formation of mucus-filled cysts.
- Cysts do not display epithelial lining (pseudocyst).

Macroscopy: Cysts measuring 1 to 1.5cm in diameter almost always located near a joint capsule or tendon sheath.