Total forearm free flap procedures after forequarter amputations have been sparsely described in the literature. Using the amputated arm as a"free filet flap" remains a viable surgical option after radical forequarter amputations performed for the resection of large, invasive tumors of the shoulder or thoracic wall region. Using the forequarter specimen as a donor site seems favorable in that it eliminates the usual donor site morbidity. Nevertheless, in our patient with invasive ductal carcinoma of the breast and a fibrosarcoma suffering from severe pain and septic conditions - which failed to respond properly to conservative therapy - as well as rapidly progressive tumor ulceration despite repeated radiation therapy, we decided to attempt complete tumor removal by hemithoracectomy as a last resort. This decision was taken following multiple interdisciplinary consultations and thorough patient information Although technically feasible with complete tumor removal and safe soft tissue free flap coverage, the postoperative course raises questions about the advisability of such ultra radical surgical procedures, as well as about the limitations of respiratory recovery after hemithoracectomy with removal of the sternum. Hence, based on our experience with such radical tumor surgery, we discuss the issues of diminished postoperative pulmonary function, intensive care possibilities and ethical issues.The English full-text version of this article is available at SpringerLink (under"Supplemental").