Perianal fistula: abscess
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Contrast fistulogram - low fistula: contrast spilling in the anal canal and rectum:
The contrast was given through a feeding tube outlining the linear fistulous tract associated with a large perianal collection measuring about 25 x 40 x 65 mm. The tract communicates with the anal canal.
Regarding the above imaging findings, complicated perianal fistula associated with perianal abscess is present.