TY - JOUR T1 - Esophageal Adenocarcinoma Metastasizing to a Solitary Fibrous Tumor: An Unprecedented Case of Tumor-to-tumor Metastasis JF - Anticancer Research JO - Anticancer Res SP - 5835 LP - 5838 DO - 10.21873/anticanres.15402 VL - 41 IS - 11 AU - UZAIR JOGIAT AU - CHANTALLE GRANT AU - ERIC L.R. BEDARD AU - KAROLYN AU AU - REMEGIO MAGLANTAY AU - DAVID WILLIAMS Y1 - 2021/11/01 UR - http://ar.iiarjournals.org/content/41/11/5835.abstract N2 - Background: Tumor-to-tumor (TMT) metastasis is a rare phenomenon in which a primary malignancy undergoes metastasis to an additional synchronous or metachronous primary tumor. Case Report: This is a case report of a tumor-to-tumor metastasis from a poorly differentiated adenocarcinoma of the esophagus to a solitary fibrous tumor (SFT) of the right posterior neck, in a 70-year-old-male with a solitary right vertebral artery. After appropriate work-up and involvement of the necessary specialties, the patient underwent a complex surgical resection with negative margins. Conclusion: We present the unique case of a patient with TMT from esophageal adenocarcinoma to an SFT in the posterior neck, not previously reported in the literature. This rare condition with unique oncologic implications highlights the need for a multidisciplinary approach, in this case involving thoracic surgery, head-and-neck surgery, medical oncology, radiation oncology, pathology, and neurosurgical sub-specialty services. ER -