TITLE:
A Rare Collision Tumor: Tracheal Sarcomatoid Carcinoma Invading a Papillary Thyroid Carcinoma
AUTHORS:
Mofiyinfolu Sokoya, Carissa M. Thomas, Marcia Eustaquio
KEYWORDS:
Collision Tumor, Spindle Cell Carcinoma, Sarcomatoid Carcinoma, Tracheal Malignancies, Thyroid Carcinoma
JOURNAL NAME:
Open Access Library Journal,
Vol.4 No.12,
December
22,
2017
ABSTRACT: A collision tumor involving a tracheal sarcomatoid carcinoma and a papillary thyroid carcinoma has never been reported in the literature. A 78-year-old female presented with a large neck mass and hoarseness. A fine needle aspiration demonstrated papillary thyroid carcinoma. Imaging revealed a right thyroid mass invading into the tracheal lumen with bulky ipsilateral lymphadenopathy. The patient underwent a total thyroidectomy, tracheal resection, and central and right neck dissections. Pathology demonstrated a tracheal sarcomatoid carcinoma invading the right thyroid, which had multifocal papillary thyroid carcinoma with central and lateral neck metastases. The patient subsequently received adjuvant chemoradiotherapy and radioactive iodine. We present a case of a tracheal sarcomatoid carcinoma colliding with a papillary thyroid cancer. Treatment modalities should address the most aggressive tumor, while being tailored to clinical picture, tumor histology, and patient preferences.