Acute synovitis

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Acute synovitis
Diagnosis in short

Acute synovitis. H&E stain.

LM synovium with neutrophils
LM DDx infectious synovitis
Site joints

Clinical history +/-procedure
Signs swelling, erythema, warm joint
Symptoms +/-pain
Other joint culture

Acute synovitis is an inflammatory process involving the synovium.

This article deal with nonspecific causes of acute synovitis (acute nonspecific synovitis).

General

  • Cultures negative - by definition.
  • Nonspecific finding.
  • May form a tumour-like mass.[1]

Microscopic

Features:

DDx:

Images

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SYNOVIUM, LEFT FIFTH FINGER, EXCISION:
- ACUTE SYNOVITIS WITH FOCAL HEMOSIDERIN-LADEN MACROPHAGES AND FIBROVASCULAR TISSUE.
- NO SIGNIFICANT NUMBER OF PLASMA CELLS ARE IDENTIFIED.
- NO MICROORGANISMS APPARENT WITH ROUTINE STAINS, SEE COMMENT.
- NO EVIDENCE OF MALIGNANCY.

COMMENT:
Correlation with microbiology is suggested.
SYNOVIUM, RIGHT ELBOW, BIOPSY:
- ACUTE SYNOVITIS.
- NO MICROORGANISMS IDENTIFIED WITH ROUTINE STAINS.
- NEGATIVE FOR MALIGNANCY.

COMMENT:
Correlation with microbiology is suggested.

See also

References

  1. Prosser, GH.; Sterne, GD.; Nancarrow, JD. (Jan 2002). "Intratendinous rupture of flexor digitorum profundus caused by non-specific synovitis.". Br J Plast Surg 55 (1): 77-9. doi:10.1054/bjps.2001.3726. PMID 11783976.