"Flap of Hope: a Pectoralis Major Muscle Solution for Tracheal Resection Closure": Case Report.

Medullary carcinoma of the thyroid is a rare type of thyroid cancer that arises from the parafollicular cells or C-cells, which produce calcitonin. It accounts for approximately 5-10% of all thyroid cancers (Leboulleux et al. in Clin Endocrinol 61(3):299-310, 2004). The main treatment for medullary thyroid carcinoma is surgery, which involves the removal of the thyroid gland and any affected lymph nodes. In advanced cases where the cancer has spread to nearby structures such as the trachea (Gupta et al. in Indian J Surg Oncol 11(1):75-79, 2020), tracheal resection followed by reconstruction may be necessary to remove the cancer (Chernichenko et al. in Curr Opin Oncol 24(1):29-34, 2012) and restore proper breathing, closure of large tracheal defect can be done with pectoralis major myocutaneous flap (Salmerón-González et al. Plast Surg Nurs 38. 162-165, 2018). In this article, we report a case of recurrent medullary carcinoma thyroid with tracheal infiltration and tracheal resection was done, both of which is extremely rare. A 38-year-old male patient with a history of total thyroidectomy presented with recurrence was referred to our department, his previous biopsy and IHC revealed medullary carcinoma thyroid. Ga-68 DOTA PET CT scan was done which showed PET avid residual mass over right side, multiple bilateral cervical nodes, and tracheal infiltration (Fig. 1) then underwent a bronchoscopy showing involvement of the second, third, and fourth tracheal ring. Bilateral neck dissection with sleeve resection of trachea with overlying residual tumor was done and was sent for frozen which revealed positive margins and re-excision of margins was done, which lead to large defect (Fig. 2) which could not be closed primarily with a Montgomery T Tube. A de-epithelized pectoralis major myocutaneous flap used to close the tracheal defect followed by placing the Montgomery T Tube (Fig. 3).Post-operative period was uneventful. The final histopathology report showed R0 resection of tumor. T tube was removed after 4 weeks.

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Conflict of interestThe authors declare no competing interests.