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[Metastasis of medullary thyroid carcinoma to the endometrium: A case report and review of the literature].
Revista Española de Patología 2022 October
Uterine metastases from extra pelvic tumors are rare; involvement of the uterus is usually by direct neoplastic extension from adjacent organs. We report the case of a 68-year-old woman with a history of total thyroidectomy. She presented with urinary incontinence associated with episodes of metrorrhagia. Ultrasound showed a thickened endometrium. A legrado was performed and the biopsy revealed a proliferation of neoplastic cells with oval nuclei, «salt and pepper» chromatin, evident nucleoli and a moderate amount of eosinophilic cytoplasm. These cells were positive for CKAE1 / AE3, TTF-1, CEA and calcitonin. The histological and immunohistochemical findings corresponded to a metástasis from a medullary thyroid carcinoma. Although metastatic tumors in the uterus are extremely rare, they may give rise to abnormal uterine bleeding and should be considered when the patient's history and the histological findings are not characteristic of a primary lesion.
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