1996 年 5 巻 1 号 p. 19-23
A case of gastric cancer with breast metastasis is presented. The patient was a 57-year-old woman admitted for the treatment of severe emaciation. Evaluation on admission revealed a mass in the epigastrium and a red swollen left breast with multiple enlarged axillary and supraclavicular lymph nodes. An upper gastrointestinal series and endoscopy showed Borrmann type 4 gastric cancer.
Biopsy specimens obtained at endoscopy and from the breast revealed signet ring cell carcinoma. Since there were multiple tumor emboli in the subcutaneous lymphatics without involvement of the mammary ducts, the breast lesion was diagnosed as metastatic gastric cancer. Changes in lymphatic flow and retrograde shedding of tumor cells seemed to be the cause of this lesion.
