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Japanese Journal of Clinical Oncology 30:185-187 (2000)
© 2000 Foundation for Promotion of Cancer Research

Occult Breast Cancer Presenting Axillary Nodal Metastasis: A Case Report

Hajime Abe1, Hiroyuki Naitoh1, Tomoko Umeda1, Hisanori Shiomi1, Tohru Tani1, Masashi Kodama1 and Hidetoshi Okabe2,+

1First Department of Surgery and 2Department of Laboratory Medicine, Shiga University of Medical Science, Shiga, Japan

We report a case of a 42-year-old female with occult breast cancer presenting axillary nodal metastasis. She complained of a swelling of the right axillary lymph node, but no breast mass was palpable. Biopsy of the lymph node was performed and histological examination showed a metastatic ductal carcinoma with papillotubular formation. Estrogen receptor of the lymph node was positive. No pathological findings were obtained by mammography and ultrasono­graphy and systemic examinations revealed no extramammary primary lesion. All these data suggested an occult carcinoma of the breast and modified radical mastectomy was performed. Pathological findings of the removed specimen failed to find the primary breast cancer lesion. The patient has been treated with hormonal therapy and she is well without evidence of disease 5 years after surgery.

+ For reprints and all correspondence: Hajime Abe, First Department of Surgery, Shiga University of Medical Science, Seta-Tsukinowa, Otsu, Shiga 520-2192, Japan. E-mail: abe@belle.shiga-med.ac.jpAbbreviations: CEA, carcinoembryonic antigen; CA15-3, carbohydrate antigen 15-3; AFP, {alpha}-fetoprotein; ER, estrogen receptor; PR, progesterone receptor; PCR, polymerase chain reaction


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