Consideration of the process of lymph node metastasis in invasive breast cancer with squamous cell differentiation

International Surgery Pub Date : 2024-02-16 DOI:10.9738/intsurg-d-22-00005.1

Mayu Aoki, Takaaki Fujii, C. Honda, Y. Nakazawa, M. Ogino, S. Obayashi, Ken Shirabe

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Abstract

Breast cancer with squamous differentiation is a relatively rare condition. Clinically, lymph node metastasis is uncommon in metaplastic carcinoma We treated a patient with lymph node metastasis of the ductal carcinoma component of invasive ductal carcinoma with squamous cell differentiation. An 84-year-old postmenopausal Japanese woman had a left-breast mass with an enlarged lymph node in the left axilla. A biopsy revealed an invasive ductal carcinoma with squamous cell differentiation. A left mastectomy with axillary lymph node dissection was performed. The Histological evaluation revealed invasive ductal carcinoma with squamous cell differentiation. One lymph node was positive for metastasis consisting of ductal carcinoma without squamous cell differentiation. This case suggests that lymph node metastasis in ductal carcinoma with squamous differentiation may first involve the ductal carcinoma component and then differentiation may occur in the in volved lymph nodes. This is an interesting case highlighting the process of the progression of lymph node metastasis in cases with breast cancer with squamous cell differentiation.

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考虑鳞状细胞分化的浸润性乳腺癌的淋巴结转移过程

具有鳞状细胞分化的乳腺癌相对罕见。临床上，移行细胞癌的淋巴结转移并不常见。我们治疗了一名浸润性导管癌伴有鳞状细胞分化的淋巴结转移患者。一名 84 岁的绝经后日本妇女左侧乳房肿块，左侧腋窝淋巴结肿大。活组织检查结果显示为浸润性导管癌伴鳞状细胞分化。患者接受了左侧乳房切除术和腋窝淋巴结清扫术。组织学评估显示为浸润性导管癌，鳞状细胞分化。一个淋巴结的转移呈阳性，为无鳞状细胞分化的导管癌。该病例表明，伴有鳞状细胞分化的导管癌的淋巴结转移可能首先涉及导管癌成分，然后在受累淋巴结发生分化。这是一个有趣的病例，凸显了鳞状细胞分化型乳腺癌淋巴结转移的进展过程。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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International Surgery

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