Case Report: Synchronous primary malignancy including the breast and endometrium

A Single-Center Study of Patients With Synchronous Primary Malignancy: A Case Series

Multiple primary malignant tumors (MPMT) can be defined as more than two different tumors synchronously or metachronously forming in the same organ or different organs. The incidence of MPMTs varies dramatically between antemortem and postmortem examinations, becoming a serious medical issue. Evidence shows that the overall incidence of MPMTs is between 2.4% and 17%. Double primary malignancy (DPM) is considered the most common type of MPMT. In this case series, we present three cases of MPMT. The first case involved the colon and the breast, the second case involved the colon and the kidney, and the third case involved rectum and kidney.

Case Report: Metachronous Quadruple Cancers Including Breast Cancer and Triple Genital Cancer

Most multiple primary cancers(MPCs) are double primaries, while quadruple cancer is rare, especially breast cancer and triple genital cancer. Our work is the first report about ametachronous quadruple cancer in the reproductive system, including breast, ovary, fallopian tube and cervix. A54-year-old woman, who underwent modified radical mastectomy and right breast tumor resection 3 years ago, presented with abnormal vaginal discharge for 2 months, and she was subsequently diagnosed with stage IIA2 cervical squamous cell carcinoma. She then underwent radiotherapy and chemotherapy, as well as radical hysterectomy, bilateral salpingo-oophorectomy and bilateral pelvic lymphadenectomy. Postoperative pathological findings revealed that the patient had cervical, ovarian and tubal triple cancers with different histopathology for all lesions, also different from breast cancer, implying that these tumors had separate etiology and were not metastatic tumors. Our work might provide aseries of diagnostic, etiological and therapeutic strategies for MPC patients.