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Figure 1 shows a fungating but no-cancerous breast tumour. Rapid growth of the non-malignant stromal tumour described as a phyllodes tumour involved most of the breast and caused breast ‘rupture’ from pressure necrosis of the overlying skin.
The 48-year-old woman had been institutionalised and poorly cared for because of schizophrenia. A small breast lump had been present over many years and had started to enlarge in the last 3 months. The late presentation was due to social withdrawal, paranoia and refusal to seek treatment.
She was single and nulliparous but without a family history of breast cancer. Fungating tumours of the breast are commonly attributed to invasive duct carcinoma. An everted ulcer edge and oedema of the surrounding skin are characteristic. Nevertheless, images presented show a tumour without skin oedema, fixity or attachment suggestive of malignant infiltration. There was no axillary lymphadenopathy or distant metastases. Core biopsy revealed leaf-like architecture with marked stromal overgrowth and hypercellularity suggestive of a borderline phyllodes tumour (figure 2). Clonal studies have confirmed that fibroadenomata could progress to phyllodes tumours.1 These tumours tend to be locally invasive, but only rarely metastasise to distant sites. Wide local excision alone is recommended to prevent local recurrence.2 3
Aggressive pharmacotherapy and counselling enabled optimum treatment in this instance. Considering the large size of the tumour she underwent simple mastectomy with clear margins and remains disease-free 4 years later. She now lives with her sister and complies with regular follow-up medical care.
Competing interests None.
Patient consent Obtained.