The principle of en bloc resection has been a standard of surgical oncology. While en bloc resection still remains a key surgical principle, the extension of surgical oncology into more complex anatomical areas and technological advances (ie, endoscopic mucosal resections, transoral laser microsurgery) highlight the need to reconsider the potential merits of piecemeal tumor removal.
1,2 Piecemeal resections are controversial because they result in fragmentation of the removed specimen, compromising its integrity and complicating confident histopathologic evaluation for the adequacy of excision. While in certain areas of the body, such as the skull base or larynx, piecemeal tumor removal may be justified by anatomical constraints
3 or functional imperatives
4 (ie, preservation of voice and deglutition), the apparently increasing use of the piecemeal approach in anatomically simpler and more accessible parts of the human body is more difficult to understand. Some oncologic resections, including prostatectomies, partial nephrectomies, and breast-conserving surgical procedures, are now composed of multiple parts, with margins being distinct and separate from the main resected specimen.
5-8 In such scenarios, it becomes unclear as to what is an adequate resection and what is the margin.