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Background.- Medullary thyroid carcinoma usually presents with palpable cervical lymphadenopathy, rapidly arising neck mass and local pain. Less frequently, dysphagia, dyspnea and dysphenia can be seen as a result of local invasion. However, especially in familial cases (MEN 2A, MEN 2B and nonMEN), chronic diarrhea can develop as the only symptom.
Observation.- In the present study, we present a 25 year-old male patient with distant metastasis of medullary thyroid carcinoma. The diagnosis was confirmed after liver biopsy taken during diagnostic laparoscopy.