Pigmented Villonodular Synovitis (PVNS) of the Knee mimicking Septic Arthritis in a Paediatric Patient: A Case Report
https://doi.org/10.5704/MOJ.2111.019
- Author:
Indra F
1
;
Anuar-Ramdhan IM
1
;
Vick-Duin E
2
;
Awang-Ojep DN
3
Author Information
1. Department of Orthopaedics, Universiti Malaysia Sarawak, Kota Samarahan, Malaysia
2. Department of Orthopaedics, Universiti Malaysia Sabah, Kota Kinabalu, Malaysia
3. Department of Pathology, Universiti Malaysia Sarawak, Kota Samarahan, Malaysia
- Publication Type:Journal Article
- Keywords:
pigmented villonodular synovitis, paediatric knee, septic arthritis
- From:Malaysian Orthopaedic Journal
2021;15(No.3):122-126
- CountryMalaysia
- Language:English
-
Abstract:
Pigmented villonodular synovitis (PVNS) is a benign but
rare proliferative disorder of the synovium. It commonly
occurs in the adult population and usually presents as a
monoarticular disease. There are two types of PVNS, namely
the localised and diffused type. The disease is often
misdiagnosed due to its rarity especially in paediatric
patients. Knee involvement in PVNS is the commonest form
in children although other joints such as hip, foot, ankle, hip,
sacroiliac joint and concurrent multiple joint involvements
have also been reported. PVNS in paediatric patients is often
misdiagnosed as septic arthritis, juvenile rheumatoid arthritis
and bone sarcoma, and the diagnosis is usually often made
late due to its vague presentation. The majority of PVNS
cases are managed by surgery either via open or arthroscopic
synovectomy except in a few paediatric patients as described
in the literature. This case report of PVNS is of a knee in 11-
year-old boy who was initially treated as septic arthritis. The
synovium appearance mimicked the features of PVNS
during a knee arthrotomy washout, and histopathological
examination confirmed the diagnosis. The knee symptoms
had significantly improved without additional surgery, and
good functional knee motion was achieved, with no sign of
recurrence, after two years of follow-up.
- Full text:16.2021my1211.pdf
