Coexistent thyroid and lung cancers resembling "flip-flop" phenomenon

Daniela Cavaco; Davide Fraga; Teresa Ferreira

doi:10.1002/ccr3.4770

Coexistent thyroid and lung cancers resembling "flip-flop" phenomenon

Clin Case Rep. 2021 Aug 30;9(9):e04770. doi: 10.1002/ccr3.4770. eCollection 2021 Sep.

Authors

Daniela Cavaco¹, Davide Fraga², Teresa Ferreira²

Affiliations

¹ Department of Endocrinology Instituto Português de Oncologia de Lisboa Francisco Gentil EPE Lisbon Portugal.
² Department of Nuclear Medicine Instituto Português de Oncologia de Lisboa Francisco Gentil EPE Lisbon Portugal.

Abstract

The "flip-flop" phenomenon may be present in differentiated progressive thyroid cancer. A high suspicion index must be maintained when this phenomenon coexists with a high tumor burden, due to the risk of the appearance of distinct tumors.

Keywords: FDG‐PET/CT; dedifferentiate thyroid cancer; differentiated thyroid cancer; iodine/FDG uptake; radioiodine therapy; radioiodine‐refractory thyroid cancer; “flip‐flop’’ phenomenon.

Publication types

Case Reports