A Metastatic Breast Tumor of an Appendiceal Signet Ring Cell Carcinoma.

ABSTRACT: A 54-year-old woman with pseudomyxoma peritonei from an appendiceal signet ring cell carcinoma was referred to our hospital. Right massive effusion with cytology-proven malignant cells was controlled with thoracentesis. Pathological study after intraperitoneal (IP) chemotherapy, hyperthermic IP chemotherapy, and cytoreductive surgery showed no malignant cells in the abdomen except for the appendix and greater omentum. Although the patient noticed a right breast mass, mammography (MMG) showed no abnormality. Ultrasonography showed right breast masses consisting of hypo- and hyper-echoic areas without clear tumor margins. Magnetic resonance imaging (MRI) with contrast medium showed multiple lesions showing persistent enhancement pattern. Pathological study of the vacuum-assisted biopsy speci

SUBMITTER: Okumura K 

PROVIDER: S-EPMC10134057 | biostudies-literature | 2023 Jan-Dec

REPOSITORIES: biostudies-literature