A challenging case of a giant thymoma resected using the clamshell approach.

Extensive intrathoracic tumours demand an aggressive surgical approach due to their size and proximity to vital structures, thereby increasing procedural risks. A thymoma can expand substantially before detection and affect surrounding tissues. An operation is the primary therapy, sometimes supplemented by chemotherapy or radiation. In this case report, we present the case of a giant thymoma managed with the clamshell approach.