Metastasis of Squamous Cell Carcinoma of the Larynx to the Right Adrenal Gland—A Case Report

<b>Background/Objectives</b>: Malignant adrenal tumors comprise both primary adrenal neoplasms and metastatic lesions, with the latter being significantly more common. Squamous cell carcinoma (SCC) of the larynx is a prevalent head and neck cancer that typically spreads to the cervical lymph nodes, with distant metastases being rare. Among such metastases, adrenal gland involvement is particularly uncommon, presenting unique diagnostic and therapeutic challenges. The study aimed to explore the progression, diagnostic process, and therapeutic management of a rare case of SCC of the larynx metastasizing to the adrenal gland, highlighting the role of advanced diagnostic imaging and a multidisciplinary approach in patient care. <b>Methodology</b>: A 66-year-old male with grade 3 SCC of the larynx underwent total laryngectomy, selective cervical lymphadenectomy, and radiotherapy with a dose of 70 Gy. Chemotherapy was discontinued due to hematological complications. Post-treatment monitoring included CT and PET-CT imaging, leading to the detection of a large adrenal mass. Surgical biopsy confirmed metastatic SCC in the adrenal gland, as resection was not feasible due to extensive invasion. Diagnostic imaging and histopathological examination were complemented by biochemical evaluations to assess hormonal activity. <b>Results</b>: The adrenal mass was identified as a metastasis from the laryngeal SCC. Imaging studies provided detailed insights into the lesion's size, metabolic activity, and non-functional status. Despite comprehensive efforts, the tumor was deemed unresectable, highlighting the aggressive nature of the disease and the limitations of current therapeutic modalities. <b>Conclusions</b>: This rare case emphasizes the importance of early detection, advanced imaging techniques, and interdisciplinary collaboration in managing complex metastatic presentations. It underscores the critical need for further research into systemic treatments, such as immunotherapy, and the development of standardized protocols for rare metastatic patterns. The study contributes to the growing body of literature on the management of uncommon cancer metastases, advocating for individualized patient care and innovation in treatment strategies.