Two patients developed an epidural abscess in the posterior cranial fossa following tumor dissection from the occipital region of the head and underwent surgical treatment. After debridement of necrotic and infectious tissues inside the abscess was performed, the empty cavity was filled and the tissue defect was reconstructed by using a trapezius muscle flap or a trapezius musculocutaneous flap. Both patients had good clinical results, and their abscesses were healed. The trapezius muscle flap and trapezius musculocutaneous flap were quite useful in the treatment for epidural abscess in the posterior cranial fossa.
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