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  Indian J Med Microbiol
 

Figure 1: Various views of fistulogram showing radio opaque hard stony material within the fistulous tract, shown by red arrow mark. White ring suggestive of external opening of the tract, spillage of radio opaque dye inside the rectum

Figure 1: Various views of fistulogram showing radio opaque hard stony material within the fistulous tract, shown by red arrow mark. White ring suggestive of external opening of the tract, spillage of radio opaque dye inside the rectum