Published online Dec 6, 2022. doi: 10.12998/wjcc.v10.i34.12678
Peer-review started: July 14, 2022
First decision: August 4, 2022
Revised: August 14, 2022
Accepted: November 2, 2022
Article in press: November 2, 2022
Published online: December 6, 2022
Processing time: 140 Days and 21.8 Hours
Multiple primary malignant neoplasms refer to multiple tumors with different origins. They may be synchronous or metachronous. The incidence is 0.73%– 11.7%. Synchronous cases of breast cancer with sarcoma are rare.
Here, we report a 78-year-old female patient admitted to hospital after accidental discovery of a left axillary mass. Preoperative examination revealed a breast mass. Pathology showed left breast cancer and left axillary sarcoma. The patient underwent surgery, endocrine therapy and radiotherapy. She has been followed up for 1 year, and no local recurrence or distant metastasis was observed.
Attention should be paid to multiple primary malignant neoplasms, not limited to the current diagnosis and analysis, avoiding missed diagnosis and misdiagnosis.
Core Tip: Multiple primary malignant neoplasms refer to multiple tumors with different origins. They may be synchronous or metachronous, with an incidence of 0.73%–11.7%. Synchronous cases of breast cancer with sarcoma are rare. In clinical practice, attention should be paid to multiple primary malignant neoplasms, not limited to the current diagnosis and analysis, avoiding missed diagnosis and misdiagnosis. For patients whose clinical symptoms cannot be explained by a single tumor, the possibility of multiple primary malignant neoplasms should be considered, and comprehensive examinations should be performed to achieve early diagnosis and treatment.