Abstract
Thermal ablation by microwave ablation (MWA) or radiofrequency ablation (RFA) is a frequently used technique for hepatic lesion treatment due to its low rate of complications. Surgery, transarterial chemoembolization (TACE), and yttrium-90 (Y-90) transarterial radioembolization (TARE) are other ways to treat hepatic lesions. Thoracobiliary fistula (TBF) is a rare side effect of thermal ablation. Other side effects include vascular injury, damage to the biliary system, and infection. We present the case of a 62-year-old male patient who has a history of lymphoma and was diagnosed with a hepaticellular carcinoma lesion on follow-up CT in segment VII, which appeared in close relation to the right diaphragm. The patient had been through several interventional procedures, including Y-90 therapy, TACE, and MWA with thermal impact, which resulted in a biloma forming and ramping up the progression of pleurobiliary fistula, which is confirmed by HIDA scan, this case highlights the significance of monitoring patients after thermal ablation, particularly in cases of large justa-diaphragmatic tumors, to detect any diaphragmatic or biliary tree injuries.