This work describes clinical development of a sarcoma in the left axilla of a 36-year-old woman. The macroscopic picture changed from the initial inflammatory reddening to globular resistance of 2.5 cm, suggestive of an enlarged lymph node. Mammography did not reveal any associated breast disease. Colliquation found on the ultrasound images led to a biopsy, the result of which indicated only an inflammation, without any malignancy. Rapid growth of the axillar tumor to 10 cm in size within 8 weeks prompted surgery allowing proper diagnosis of a small mature-to-immature sarcoma. Special examinations performed by a histopathologist (at the Institute for Histopathology) could not establish the precise histogenesis, i.e. the tissue origin. Therefore it was necessary to remove any clinically obscuring tumor for the final proper histological diagnosis and adequate treatment of the patient.

Oncogynecological Centre Department of Obstetrics and Gynaecology 1st Faculty of Medicine Charles University Prague and General University Hospital Prague Prague Czech Republic

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