A Case of an 18-year-old Woman with Borderline Phyllodes Tumor

TAJI Tomoe, SUWA Hirofumi, YAMAGUCHI Ai, YAMAMOTO Tetsuro, ITO Hiroaki

doi:10.3919/jjsa.79.1816

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Other Title

18歳女性に発生した乳腺境界型葉状腫瘍の1例
症例 18歳女性に発生した乳腺境界型葉状腫瘍の1例
ショウレイ 18サイジョセイニハッセイシタニュウセンキョウカイガタヨウジョウシュヨウノ 1レイ

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Description

Phyllodes tumors are uncommon fibroepithelial tumors that account for < 1% of all breast tumors, and the median age at diagnosis is 45 years. We report a case of borderline phyllodes tumor in an 18-year-old woman who presented to our hospital with a 10-cm-sized tumor in the right breast. The tumor gradually enlarged since she was 12 years old. Upon palpation, a 10 × 9-cm-sized tumor was found to be elastic hard and mobile. Ultrasound revealed an oval, well-circumscribed, hypoechoic mass. Differentiating a phyllodes tumor from a fibroadenoma by core needle biopsy is difficult, and the tumor was diagnosed as a fibroepithelial tumor. With a preoperative diagnosis of giant fibroadenoma or phyllodes tumor, lumpectomy was performed under general anesthesia. The pathological diagnosis was borderline phyllodes tumor with a negative surgical margin (0.1 mm), and the recommended treatment was wide excision with a margin of > 1 cm. However, good cosmetic outcome and preservation of breast-feeding ability are important for young female patients. Therefore, close clinical follow-up without re-operation for wider excision could be an option.

Journal

Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association)

Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association) 79 (9), 1816-1819, 2018

Japan Surgical Association

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