Lê , V. K.; Đoàn, T. K. O.; Nguyen, T. T. T.; Nguyen, T. K.; Le, T. Y.; Vu, D. L. Imaging Characteristics and Outcomes of Ultrasound-Guided Percutaneousdrainage of Appendicular Abscess After 12 Months at the Radiology Center, Bach Mai Hospital. vjrnm 2026, 4-12.