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Table 4 Parks and St. James classification of perianal fistula in our study

From: Magnetic resonance imaging in the workup of patients with perianal fistulas

 

N = 53

Parks classification

Intersphincteric

32 (60%)

Trans-sphincteric

13 (24.5%)

Extrasphincteric

4 (7.5%)

Suprasphincteric

4 (7.5%)

St. James classification

Grade I

23 (43%)

Grade II

10 (19%)

Grade III

8 (15%)

Grade IV

12 (23%)