Spinal Intradural Hematoma after Spinal Anesthesia in a Young Male Patient: Case Report and Review of the Literature.

Spinal intradural hematoma (SIH) is a rare condition which can cause neurological sequelae such as permanent motor weakness and sensory loss in the lower extremities. Herein, we describe a case of SIH following spinal anesthesia. The patient was a 30-year-old man who underwent treatment for accessory navicular syndrome at our department. The patient was not receiving anticoagulation therapy, and spinal anesthesia was thus selected. No symptoms of hematoma were observed in the immediate postoperative period, but the patient complained of pain in both buttocks on postoperative day 5. However, neither motor weakness nor sensory loss were observed. Additionally, as the radiating pain extending to the lower extremities typical of neurological pain was not observed, musculoskeletal pain was suspected. Magnetic resonance imaging revealed intradural hematomas at L4-5 and S1. Conservative treatment and follow-up evaluations were performed to ensure that additional neurological sequelae did not occur. Six months after symptom onset, his pain Numeric Rating Scale score was 0, and no other neurological findings were observed. However, in patients who undergo spinal anesthesia, localized pain in the back without other neurological symptoms and lack of radiating pain may be associated with more than musculoskeletal pain. Such patients must be continuously monitored.