Fistola pilonidale, o cisti pilonidale fistolizzata

Fistola interessante essenzialmente la cute, gli annessi e il sottocute, talora fino al piano fasciale, espressione principale della malattia pilonidale, con sede più spesso nella regione interglutea e sacrococcigea, di solito come infezione cronica o ricorrente dovuta all’incarnirsi di peli ed alla reazione conseguente dei tessuti interessati; più raramente una _ può interessare altre sedi, inclusa la regione perineale. Può manifestarsi clinicamente come evento acuto e suppurativo: nel caso si parlerà di cisti o fistola pilonidale ascessualizzata. Solo il riscontro obiettivo della presenza di peli in fase pre, intra o postoperatoria (l’esame istopatologico è obbligatorio) consente una diagnosi di certezza sulla natura pilonidale della lesione.

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