Difference between revisions of "Bone Cysts"

Latest revision as of 16:04, 3 March 2011

Bone cysts (Image sourced from Bristol Biomed Image Archive with permission)

May be seen radiographically
Must be distinguished from neoplasia
Expansile lytic masses
Do not appear aggressive
Subchondral cysts
- Common in horses and pigs
- Usually manifestations of osteochondrosis and DJD
Simple cysts
- May contain clear colourless fluid, or serosanguinous
- Wall of dense fibrous tissue, woven or lamellar bone
Aneurysmal bone cysts
- Expansie lesions
- Arise from disturbance of vascular tissue of bone marrow
- Grossly:
  - Appear as blood filled sponge
  - Spaces separated by fibrous trabeculae
- Histologically:
  - Proliferation of undifferentiated mesenchymal cell with multinucleated osteoclast-like cells
  - Haemorrhage and haemosiderosis
Radiography is essential to help differentiate with cavity of a neoplasm

@@ Line 1: / Line 1: @@
 [[Image:Bone cysts dog.jpg|right|thumb|100px|<small><center>Bone cysts (Image sourced from Bristol Biomed Image Archive with permission)</center></small>]]
 *May be seen radiographically
-*Must be distinguished from [[Bones Hyperplastic and Neoplastic - Pathology#Neoplastic|neoplasia]]
+*Must be distinguished from [[:Category:Bones - Neoplastic Pathology|neoplasia]]
 *Expansile lytic masses
 *Do not appear aggressive
 *'''Subchondral cysts'''
 **Common in horses and pigs
-**Usually manifestations of [[Joints Developmental - Pathology#Osteochondrosis|osteochondrosis]] and [[Joints Degenerative - Pathology#Degenerative joint disease (DJD)|DJD]]
+**Usually manifestations of [[Joints Developmental - Pathology#Osteochondrosis|osteochondrosis]] and [[Degenerative Joint Disease|DJD]]
 *'''Simple cysts'''
 **May contain clear colourless fluid, or serosanguinous