Tracheal Allotransplantation-Lessons Learned

Reconstruction of long tracheal defects still proves to be a challenge. Free fasciocutaneous flaps with cartilaginous struts or an allotransplant trachea have been reported but not been widely performed. This article reports with the experience of using a tracheal allotransplant in such a defect.

A 43-year-old lady presented with adenoid cystic carcinoma involving the entire trachea from subglottic area up to the carina, leading to a life-threatening airway occlusion. After preliminary stenting, allotransplant trachea obtained from a brain-dead individual was revascularized in the forearm of the patient after mechanical decellularization to reduce the immune load and fulfil the need for immunosuppression in the background of active cancer. Subsequently, the trachea and larynx were resected. The vascularized neotrachea was transferred successfully into the neck. The patient did well initially but succumbed to a fatal hemorrhage due to innominate vein aneurysmal rupture on the 22nd day after the transplant.

The technical details of resection, fabrication of the neotrachea, its transfer, and the lessons learnt in this tracheal allotransplant are described.

Indian Subcontinent's First Proximal Forearm Level Double Upper Extremity Transplantation

Introduction Vascularized composite allotransplantation (VCA) has added another step to the reconstructive ladder, leading to a paradigm shift in the approach toward management of cases of upper limb amputations. In this article, we discuss in detail the technical aspects of proximal forearm level transplantation, as well as the immediate posttransplant monitoring and immunosuppression protocols.

Materials and Methods A 24-year-old male victim of an electric injury presented with a bilateral proximal forearm level amputation. After the mandatory preoperative psychiatric and immunological evaluation, the patient underwent a proximal forearm level double upper extremity transplantation. He was then put on a stringent immunosuppression and physical rehabilitative regime.

Discussion Conceptually, the proximal forearm level transplantation is significantly different from distal forearm level transplant. This transplant “reestablishes” the “donor extremity length,” maintains the normal functional length of the donor muscles, and the functional return happens only after the newly transplanted donor muscles are reinnervated over a period of time.

Conclusion As the sequence of surgical repair and associated decision making could be quite confusing for this level of transplantation, it is highly advisable to do mock cadaver surgical dissections in order to standardize the procedure and make the team familiar with it.