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. 2022 Sep 26;15:189–198. doi: 10.2147/CEG.S374848

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© 2022 Yagnik et al.

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A 19-year-old male patient with acute posterior horseshoe abscess.

Notes: The internal opening was non-locatable. The internal opening was assumed to be at posterior midline (6 o’clock) and the fistula was managed accordingly. MRI done eight months after surgery showed a completely healed fistula (E and F). (A) Axial section showing posterior horseshoe abscess; (B) Coronal section; (C) Preoperative T2-weighted MRI Axial section; (D) Sketch of C; (E) Postoperative healed T2-weighted MRI Axial section; (F) Sketch of E.

Abbreviation: MRI, Magnetic resonance imaging.