Abstract
Desmoid tumors are a manifestation of familial adenomatous polyposis (FAP), associated with mutation of the APC gene. Although considered benign tumors, desmoids can be aggressive and cause considerable morbidity. Known risk factors for desmoid tumor growth include location of mutations within the APC gene, family history of desmoid tumors, previous surgery, female gender, and pregnancy. Desmoids occur at diverse sites, commonly within the abdomen or at sites of previous surgery; thoracic desmoids are relatively uncommon. Reported here is a highly desmoid tumor-prone FAP family with a truncating mutation in the APC gene at codon 1550 (c.4648G>T) in which female siblings developed remarkably similar thoracic desmoids with highly aggressive tumor behavior during the onset of puberty, throughout adolescence, and in one sibling during and following pregnancy. Both siblings had a fatal outcome. This case underscores the potential for aggressive behavior of desmoids during adolescence and the need for close vigilance during the adolescent and young adult (AYA) age range in desmoid-prone FAP kindreds.
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Supported by NIH 5P30CA054174-24 and Cancer Prevention and Research Institute of Texas PP160011.
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Gad, M.M., Langevin, AM., Sugalski, A.J. et al. Highly aggressive thoracic desmoid tumors in adolescent siblings with fatal outcomes in an FAP kindred: a need for increased vigilance and intervention in at-risk AYAs. Familial Cancer 19, 311–314 (2020). https://doi.org/10.1007/s10689-020-00177-2
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DOI: https://doi.org/10.1007/s10689-020-00177-2