SPINDLE CELL SUBTYPE OF MEDULLARY THYROID CARCINOMA WITH SOMATIC RET M918T MUTATION: A CASE REPORT AND LITERATURE REVIEW
The spindle cell subtype of medullary thyroid carcinoma (MTC) is an exceptionally rare morphologic pattern that can be mistaken cytologically and histologically for anaplastic thyroid carcinoma, sarcoma, melanoma, and other spindle cell lesions of the neck, creating a substantial diagnostic pitfall. We report a 72-year...