Course of acute inflammation

Acute inflammation may end up in:

-  Resolution: i.e. complete restitution of normal structure and function of  the tissue,

eg. lobar pneumonia.

-  Healing by fibrosis (scar formation).

-  Abscess formation {Surgical law states -Thou shallt ( you shold ) drain all abscesses.} However, if it is left untouched, it may  result in

- Sinus formation - when an abscess cavity makes   contact with only one epithelial lining. 

- Fistula formation: when an abscess tract connects two epithelial surface. 

Or very rarely to septicemia or Pyemia with subsequent metastatic abscess in heart, kidney, brain etc.

References

Bezabeh ,M. ; Tesfaye,A.; Ergicho, B.; Erke, M.; Mengistu, S. and Bedane,A.; Desta, A.(2004). General Pathology. Jimma University, Gondar University Haramaya University, Dedub University.