What happened, in summary

An 84-year-old woman had a long history of cancer treatment. Seventeen years before she developed gastrointestinal symptoms at age 84, she was diagnosed with invasive ductal carcinoma of the left breast. That first breast cancer was treated with radiation and adjuvant endocrine therapy. Eight years after the ductal diagnosis, she developed a separate oestrogen- and progesterone-receptor-positive, HER2-negative invasive lobular carcinoma in the same breast. The lobular cancer followed its own course, with surgery and endocrine treatment, and was later identified in a gastric metastasis. Her earlier ductal cancer had been managed with radiation and adjuvant endocrine therapy many years before the new gastrointestinal symptoms.