Purpose : To evaluate the efficacy of percutaneous catheter drainage of tuberculous abscess associated with tuberculous spondylitis.Materials and Methods : In twelve patients (male : female=1 : 2 ; mean age, 37.3 years) tuberculous abscess wass diagnosed, and was treated by percutaneous abscess drainage(PAD). All patients had either a psoas or iliopsoas abscess and in two, a paravertebral abscess was also present. Four had bilateral lesiosns, one, a unilateral lesion, and one, paravertebral abscesses and bilateral psoas. The size of abscesses ranged from 4$ imes$5$ imes$12cm to 6$ imes$9$ imes$30cm ; four were septated and all were lobulated. Using an 8.5-14F catheter, 17 of 18 abscesses were percutaneously drained ; Ultrasound guidance was used in 12 cases, and CT guidance in five.Results : The volume of drainage mater ranged from 150 to 1200 ㏄(mean, 600㏄), and the duration of catheter insertion was 6-48 (mean, 17.4) days. In no patient did significant complications arise during or after drainage, and in all cases, follow-up studies using ultrasound, CT or MRI were performed. The duration of follow-up ranged from 3 to 35 (mean, 15.4) months ; during this time, no recurrence was noted.Conclusion : Chemotherapy alone is sufficient for treating a small tuberculous psoas or iliopsoas abscess, but for a large abscess, adjuvant drainage is necessary.