Abstract
The patient was a 56-year-old female who complained of a swelling of the left axillary lymph node. Biopsy of the lymph node was performed and histological examination showed a metastatic medullary tubular adenocarcinoma. From these findings, the primary lesion was suspected to be in the breast, however no mass was palpable. No pathological findings were obtained by mammography, echography or xerography of the breast. No other systemic examinations of the gastrointestinal tract, lungs and genitourinary tract revealed an extramammary primary lesion. All these data suggested an occult carcinoma of the breast and radical mastectomy was finally performed. Surgicopathology showed slight atypical ductal hyperplasia in the breast and metastatic medullary tubular adenocarcinoma in the axillary lymph node, with no malignant findings. Neither estrogen receptor nor progesterone receptor were detected in the cancerous lymph node. Adjuvant chemo-endocrine therapy was carried out for the patient and she has been doing well postoperatively for 11 months without any evidence of recurrence.
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