• Clinics in Shoulder and Elbow
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• v.15 no.2
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• pp.138-142
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• 2012

Pigmented villonodular synovitis (PVNS) is a rare benign proliferative disorder that results in villous hyperplasia and nodule formation in the synovium, tendon sheath and bursa. That most commonly affects the knee and the hip joint in adult. PVNS of the hand, the wrist, the shoulder and the elbow is rare and that of the elbow in children is particularly rarer. An eight-year-old boy had his left elbow pain and a lesion like benign bone tumor in the left fossa olecrani on plain x-ray. During the operation, abnormal synovial hyperplasia in his left elbow joint led us to diagnose PVNS. Therefore, open curettage of the lesion and radical synovectomy was performed. The specimen of the synovectomized tissue revealed PVNS. The left elbow pain subsided after the operation and the child restored a full range of motion of his left elbow. We reported this rare case of PVNS in a child's elbow joint mimicking the bone tumor together with a review of the literature.

• Journal of the Korean Arthroscopy Society
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• v.3 no.1
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• pp.48-50
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• 1999

Pigmented villonodular synovitis most commonly occurs in the knee joint and rarely extends into the popliteal space, which not only has mimicked Baker's cyst but also has been misdiagnosed as malignant tumor. We report a case of a diffuse pigmented villonodular synovitis of knee joint which is extended into the popliteal space as like a popliteal cyst. We treated this case by arthroscopic total synovectomy and excision of cyst. There was no recurrence during more than one year after operation.

• Clinics in Shoulder and Elbow
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• v.13 no.2
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• pp.275-279
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• 2010

Purpose: Here we report a case of pigmented villonodular synovitis of the shoulder associated with a rotator cuff tear. Materials and Methods: A 52 year-old female who had suffered from pigmented villonodular synovitis of the shoulder associated with a rotator cuff tear was treated with arthroscopic synovectomy and subacromial decompression. Results: Pain was reduced and the patient achieved a good functional outcome after surgery. Conclusion: The current authors report a case of pigmented villonodular synovitis of the shoulder associated with rotator cuff tear and a review of literature.

• Journal of the Korean Arthroscopy Society
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• v.5 no.2
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• pp.131-134
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• 2001

The knee joint is most commonly affected. Until now, there were several reports of this condition, but this report seems to be the first one reporting localized Pigmented Villonodular Synovitis (PVNS) after anterior cruciate ligament(ACL) reconstruction. The authors experienced localized PVNS after ACL reconstruction with bone-patellar tendon-bone at follow-up 4 years and confirmed the diagnosis by pathologic examination.

• Journal of the Korean Arthroscopy Society
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• v.5 no.2
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• pp.111-115
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• 2001

Purpose : To confirm the efficacy of arthroscopic synovectomy for the pigmented villonodular synovitis in the knee. Materials and Methods : We analysed 8 patient(9 cases) that were diagnosed and performed arthroscopic synovectomy as pigmented villonodular synovitis from July 1992 to May 2000. The diagnosis was confirmed by pathologist. The average follow-up period was 29 months(range, $15\~48$ months). The average age at initial visit was 40.4 years(rage, $15\~67$ years). Male were 6 cases and female 2 cases. The average duration from onset of the symptom to the operation was 23 months($2\~86$ months). Previous history of the trauma was noted in 2 case. There was 1 case involved both knee joints. Results : According to the athroscopic findings, there were 4 localized forms and 5 diffuse forms. At preoperational examinations, the average of flexion contracture was $4.4^{\circ}(0\~5^{\circ})$ and that of the further flexion was $117.8^{\circ}(90\~135^{\circ})$. At last follow-up examinations, the knee range of motion was normalized, the average of flexion range was $133.9^{\circ}(120\~140^{\circ})$. All patients had improvement in pain, swelling and range of motion and there was no evidence of recurrence. Conclusion : In the pigmented villonodular synovitis, arthroscopic synovectomy can be considered one of the good modality to expect good results.

• Radiation Oncology Journal
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• v.25 no.4
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• pp.278-282
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• 2007

Purpose: Diffuse pigmented villonodular synovitis (PVNS) is an uncommon aggressive synovial proliferative disorder of unknown etiology affecting the joint linings. Though a histologically benign inflammatory process, because of its aggressive growth with bone destruction or recurrence, it is frequently suggested to occur as a low malignant neoplasm. Optimal treatment is surgery, but the local recurrence rate after radical synovectomy for diffuse PVNS is relatively high due to the infiltrative growth pattern. External beam radiotherapy with moderate doses or intra-articular instillation of radioactive isotopes may improve the likelihood of local control and long-term function in patients with incompletely resected or recurrent diffuse PVNS. I report one case of diffuse PVNS of the right knee joint treated with arthroscopic synovectomy and external beam radiotherapy is presented.

• Clinics in Shoulder and Elbow
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• v.10 no.1
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• pp.140-145
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• 2007

Pigmented villonodular synovitis(PVNS) is a benign proliferative lesion, involving synovial tissue in joints, tendon sheaths, and bursae. Pigmented villonodular synovitis is a rare and usually monoarticular condition and primarily affects the knee joint and hand. Polyarticular PVNS appears in less than 1% of all case and its occurrence in the shoulder is rare(<2%). We present a 64-year-old male who had pigmented villonodular synovitis of both shoulder joints, which was treated by arthroscopic total synovectomy.

• Journal of the Korean Arthroscopy Society
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• v.13 no.3
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• pp.264-267
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• 2009

Pigmented villonodular synovitis (PVNS) is a benign proliferative disorder of the synovium of joints. It occurs most commonly in the knee joint. The disease is composed of 2 different forms: diffuse and localized. The localized form is less frequent than the diffuse one. Most cases of localized PVNS involve the anterior compartment of the knee and can be usually easily diagnosed and treated with arthroscopy. We experienced a patient of localized PVNS developed on the posterior cruciate ligament, whose main symptom was persistent pain after trauma. This case occurs rarely and complete removal of the lesion was performed arthroscopically, using posterior trans-septal portal. We report this case with review of literatures.

• Journal of the Korean Arthroscopy Society
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• v.3 no.2
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• pp.121-126
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• 1999

Diagnosis of localized pigmented villonodular synovitis (PVNS) is difficult because of its rarity and indistinctive symptoms. This study presented 11 cases of localized PVNS of the knees, which were diagnosed and treated by arthroscopic technique. There were 6 males and 5 females between the age of 15 and 59 years (mean 34.6 years). The interval from the onset of symptoms to treatment ranged from 2 months to 3 years (average 29.9 months). All patients complained knee pain and 7 patients complained palpable mass. Four of the 11 patients had trauma history. The most common involved site was anteromedial synovium near the anterior horn of medial meniscus (5 patients). The remaining cases were identified on anterior fat pad (2 cases), suprapatellar pouch, posteromedial compartment, medial gutter and the anterior horn of the lateral meniscus, respectively. Nine cases had 1 mass and the remaining cases each had 2 or 3 masses. There was no evidence of recurrence during the follow-up period (average 29.9 months). Arthroseopy is effective in the diagnosis of localized PVNS with minimal morbidity and in the definitive treatment for PVNS.

• Journal of Korean Orthopaedic Sports Medicine
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• v.7 no.1
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• pp.37-44
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• 2008

Purpose: To purpose of this study was to review the long-term follow up results of surgical treatment of the localized pigmented villonodular synovitis in the knee. Materials and Methods: We evaluated and analyzed 6 patients (6 cases) who underwent arthroscopy and excisional biopsy as pigmented villonodular synovitis from March 1988 to June 2002. The clinical diagnosis was confirmed by pathologic findings. All patients had been managed with arthroscopic excision, but two patients underwent mini-open excision. The recurrence was evaluated by the loss of preoperative symptom and physical examination for range of motion, pain and finding of swelling. Results: According to the arthroscopic findings, all patients had localized form of pigmented villonodular synovitis. Three patients had pedunculated type (one of them had torsion) and the two patients had nodular type and one patient had mixed type. All patients had improvement in pain, swelling and range of motion and there was no evidence of recurrence. Conclusion: In terms of long term follow up results, precise preoperative diagnosis and the adequate surgical treatment, especially arthroscopic excision for the localized pigmented villonodular synovitis, would be considered one of the fundamental modality to expect the good results.