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Flat epithelial atypia (FEA) increasingly is being recognized as a pathologic entity on core needle biopsies. However, definitive management of this columnar cell lesion remains debatable because its malignant potential is unknown.
A PubMed search for "flat epithelial atypia" and "columnar cell lesions" was performed.
FEA commonly was encountered in the background of higher-grade lesions such as atypical ductal hyperplasia, ductal carcinoma in situ, and tubular and lobular carcinomas. Its molecular and cytogenetic profile revealed some alterations similar to precancerous lesions. Pure FEA on core needle biopsies was upgraded to higher-grade lesions on subsequent surgical excision.
Current management of FEA is best achieved through a multidisciplinary review considering various factors to determine if surgical excision is warranted. Further studies are required to elucidate the malignant potential of this columnar cell lesion.
Division of General Surgery, McGill University Health Center, Montreal, Quebec, Canada.
This article was published in the following journal.
Name: American journal of surgery
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