Abstract
Case 1: An 85-year-old man underwent an operation for pericostal tuberculosis 65 years previously. Case 2: A 49-year-old man had undergone antituberculosis chemotherapy for pulmonary tuberculosis until 8 months previous. In both cases, abscess cavities with sequestrum exhibited a growing trend after 1 month of antituberculosis chemotherapy. Therefore, resection of the abscess and ribs was performed guided by staining with indigo carmine solution. Both cases underwent continued antituberculosis chemotherapy after the operation, with no recurrence to date. Even though the opportunity to encounter pericostal tuberculosis cases has been reduced, we still need to bear in mind that pericostal tuberculosis is one of the differential diagnoses among chest wall tumors. It is important that radical resection is performed at an appropriate time with the concomitant administration of sufficient antituberculosis chemotherapy.