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Egyptian Journal of Radiology and Nuclear Medicine
Fig. 6 | Egyptian Journal of Radiology and Nuclear Medicine

Fig. 6

From: Introducing 3D modelling of MRI in the preoperative mapping of perianal fistula: How it could help the surgeons?

Fig. 6

A 40-year-old male patient presented with a discharging perianal fistula. On DRE, an anterior left-sided tract is felt. 2D MRI in oblique axial T2W images (TR/TE, 7228/100) shows a left-sided anterior tract (arrows) breaching the superficial part of the external anal sphincter at 2 o’clock. (a, b). 3D models on the oblique top view (c, d) show the tract breaching the external anal sphincter. The radiologist interpreted the AP extension of the tract as an abscess. The external anal sphincter (yellow) was removed to interpret the tract’s extension (d) fully

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