Fat-containing lesions of the thyroid are rare, encompassing several clinical-pathological conditions such adenolipomas, thyrolipomatosis and lipomotous tissue in case of amyloidosis. Furthermore, cases of papillary thyroid carcinoma have been identified in association with thyrolipomatosis. We report a case of 51 years old man referred to surgery for a multinodular goiter, showing multiple cystic and hemorrhagic nodules of up to 3 cm. One of these lesions showed features of papillary hyperplasia with focal cytological atypia and mature fat. Here, we describe and discuss the histological and immunophenotypical features of this rare lesion. © C. Cacchi et al.
CITATION STYLE
Cacchi, C., Arnholdt, H. M., & Bartolazzi, A. (2013). A very unusual thyroid tumor: A nodule with mature fat papillary hyperplasia and focal atypia. Rare Tumors, 5(3), 165–166. https://doi.org/10.4081/rt.2013.e50
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