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A 24-year-old woman noted a mass in her left breast and visited a local hospital. The mass was ∼2.5 cm in size upon imaging and considered to be a benign tumour, so she was monitored. Six months later, the mass enlarged to >3 cm, showed redness in the skin and was painful. She took antibiotics for 1 week, and symptoms improved. She was referred to the Social Insurance Kurume Daiichi Hospital (Kurume, Japan). Ultrasonography revealed an intracystic tumour measuring ∼3.3×3.3×3.5 cm consisting of a solid papillary structure in a cystic lesion and with an inhomogeneous interior (figure 1). Dynamic MRI revealed an irregular-shaped solid portion, with enhancement within the tumour and haemorrhagic fluid in the lumen: malignancy was suspected. Local excisional biopsy was undertaken for diagnostic purposes and at the request of the patient. …
Footnotes
Competing interests None.
Patient consent Obtained.
Ethics approval This study was conducted with the approval of the Social Insurance Kurume Daiichi Hospital Ethical Committee.
Provenance and peer review Not commissioned; externally peer reviewed.