A Case of Breast Cancer with Rectal Metastasis Diagosed 17 Years after Breast Surgery for which Hormone Therapy has been Effective

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  • 術後17年目の直腸転移に対してホルモン療法が奏効した乳腺浸潤性小葉癌の1例
  • 症例 術後17年目の直腸転移に対してホルモン療法が奏効した乳腺浸潤性小葉癌の1例
  • ショウレイ ジュツゴ 17ネンメ ノ チョクチョウ テンイ ニ タイシテ ホルモン リョウホウ ガ ソウコウ シタ ニュウセン シンジュンセイ ショウヨウガン ノ 1レイ

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Abstract

Rectal metastasis from breast cancer is comparatively rare. We report a case of rectal metastasis from breast cancer diagnosed 17 years after breast surgery. The patient was a 67-year-old woman who underwent modified radical mastectomy with axillary lymph node dissection for left breast cancer 17 years earlier. She complained of constipation and visited the previous clinic. She was referred to our hospital since rectal stenosis was detected. Barium enema showed a narrowing segment encircling the lower rectum. Colon fiber showed reddish mucosa without ulcerated and elevated lesions in the rectum. Computed tomography revealed wall thickening of the rectum. A needle biopsy of the rectum was performed. The immunohistopathological analysis demonstrated the lesion to be rectal metastasis of breast cancer, invasive lobular carcinoma. Hormone therapy with letrozole was started and gave a relief of the symptom. The lesion has been well controlled for two years.

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