The 3D visualization reveals a primary tumour classified as T4a, showing a neoplasm extending beyond the thyroid capsule with gross invasion into the subcutaneous soft tissues, larynx, trachea, oesophagus, or recurrent laryngeal nerve. The model shows the extensive local spread of the tumour, highlighting infiltration into vital midline cervical structures, which compromises their integrity and function. This advanced stage underscores the need for aggressive multimodality therapy, including total thyroidectomy with en bloc resection of involved structures, often followed by radioactive iodine or external beam radiotherapy, and is associated with a significantly increased risk of local recurrence and reduced survival.
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