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Abstract

Vascular changes in psoriatic knee joint synovitis.

U Fiocco, L Cozzi, F Chieco-Bianchi, C Rigon, M Vezzù, E Favero, F Ferro, P Sfriso, L Rubaltelli, R Nardacchione and S Todesco
The Journal of Rheumatology November 2001, 28 (11) 2480-2486;
U Fiocco
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L Cozzi
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F Chieco-Bianchi
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C Rigon
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M Vezzù
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E Favero
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F Ferro
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P Sfriso
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L Rubaltelli
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R Nardacchione
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S Todesco
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Abstract

OBJECTIVE: To evaluate the diagnostic utility of standard arthroscopy supported by a computerized image analysis system; and to examine and quantify the macroscopic appearance of blood vessels in selected anatomical areas, comparing 2 groups of patients with PsA and RA with refractory knee joint synovitis (KJS) for vascular marking (VM) features and VM scores, as well as for the relationship between respective VM scores and local and systemic KJS disease activity indices. METHODS: Standard arthroscopy was carried out on 39 knees (20 PsA, 19 RA). Videorecordings of the examination were reanalyzed using a computer image analysis system and software. The appearance of vascular markings was assessed and separately scored for the areas of surface synovium (capsular, CVM), villous proliferation (villous, VVM), and synovium adherent to cartilage (pannus, PVM). Indices of systemic (erythrocyte sedimentation rate, ESR) and local KJS disease activity (clinical index) were obtained before arthroscopy. The morphology and scores of the distinct VM were compared between PsA and RA groups, as was the relationship between respective VM scores and ESR and KJS clinical indices. RESULTS: Distinctive VM features were observed for PsA and RA KJS in each separate synovial architecture examined. VVM and CVM scores were significantly correlated with each other in PsA knees, and were significantly higher in PsA compared with RA. In both diseases, VVM and CVM scores were not related to KJS duration or activity or to ESR values, but in RA they were directly correlated with KJS activity. Moreover, the VVM capillary feature "meandering with tight convolutions," considered unique to psoriatic skin, was observed in the synovium of 13 PsA (65%) and one RA KJS (5.5%). The mean KJS duration of the PsA group with typical VVM was significantly lower than the group without VVM (2.6 +/- 1.77 vs 9.4 +/- 8.28 yrs). CONCLUSION: Our macroscopic observations of distinct changes in VM expression in selected anatomical areas of PsA and RA KJS suggest possible pathogenetic differences between the 2 diseases. The typical morphology and higher intensity of villous vascularization, in both early and chronic disease, and the different clinical relevance of VVM scores in PsA compared with RA KJS support the potential use of vascular markings as reliable outcome measures of the PsA process in KJS.

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The Journal of Rheumatology
Vol. 28, Issue 11
1 Nov 2001
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Vascular changes in psoriatic knee joint synovitis.
U Fiocco, L Cozzi, F Chieco-Bianchi, C Rigon, M Vezzù, E Favero, F Ferro, P Sfriso, L Rubaltelli, R Nardacchione, S Todesco
The Journal of Rheumatology Nov 2001, 28 (11) 2480-2486;

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Vascular changes in psoriatic knee joint synovitis.
U Fiocco, L Cozzi, F Chieco-Bianchi, C Rigon, M Vezzù, E Favero, F Ferro, P Sfriso, L Rubaltelli, R Nardacchione, S Todesco
The Journal of Rheumatology Nov 2001, 28 (11) 2480-2486;
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