Histology Course S III 22 Departement of Pathology, University of Zurich Histokurs

S III 22 dissection of aorta Orcein-Sirius  
  ICD-10: I71.0

35-year-old male, very tall and slim; fatal collapse whilst gardening

Forensic autopsy: cardiac tamponade following aortic dissection type A

- HE (21): irregular density of nuclei in media. Centres of nuclei distracted.
- Outer media noticeably strongly vascularised.
- Small cysts in loosened ground substance
- Orcein Sirius(22): the elastic lamella are disrupted in some places.
- The cloudy lighter areas in elastic gaps are mucopolysaccharide cysts.
- There are no inflammatory infiltrates.