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Objective: To analyze the clinicopathologic features of breast signet-ring cell carcinoma (SRCC) presenting with genital tract metastasis. Methods: A 54-year-old woman presented with metrorrhagia was described and the immunostaining was performed. Results: Histologically, signet ring cells (SRCs) scattered in the stroma of endometrium and cervix, bilateral fallopian tubes, ovaries and left breast. Immunohistochemistry of these SRCs showed strong reactive for cytokertin 7, CEA, GCDFP-15, and weak reactive for CA125 and negative for cytokertin 20. All these information confirmed the breast origin of SRCC. Conclusion: Primary breast SRCC is extremely rare with metrorrhagia as its first symptom. Gynecologist and pathologist should be aware of this possibility when metrorrhagia is the only symptom. Immunohistochemistry can help differentiate the origin of SRCC.
Methods: A 54-year-old woman presented with the immunostaining was performed. Results: Histologically, signet ring cells Immunohistochemistry of these SRCs showed strong reactive for cytokertin 7, CEA, GCDFP-15, and weak reactive for CA125 and negative for cytokertin 20. All (SRCs) scattered in the stroma of endometrium and cervix, bilateral fallopian tubes, ovaries and left breast These information confirmed the breast origin of SRCC. Conclusion: Primary breast SRCC is extremely rare with metrorrhagia as its first symptom. Gynecologist and pathologist should be aware of this possibility when metrorrhagia is the only symptom. Immunohistochemistry can help differentiate the origin of SRCC.