Abstract
Carcinoid tumors are slow-growing tumors originating in the neuroendocrine cells, and occur most frequently within the gastrointestinal tract. Although the liver is the most common site for metastatic carcinoid tumors, primary hepatic carcinoid tumors are exceedingly rare and reports of the imaging findings have been very scarce. We herein report imaging findings with an emphasis on magnetic resonance imaging in two cases of primary hepatic carcinoid tumors. In both cases, the tumors showed cystic areas with hemorrhagic components and early enhanced solid areas.
Highlights
Carcinoid tumors are slow-growing tumors originating in the neuroendocrine cells, and occur most frequently within the gastrointestinal tract (Maggard et al 2004; Nikfarjam et al 2004)
They preferentially metastasize to the liver, primary hepatic carcinoid tumors are exceedingly rare (Gravante et al 2008; Nikfarjam et al 2004) and there are insufficient detailed data on these tumors in the literature
Discussion and evaluation the liver is the most common site for metastatic carcinoid tumors, primary hepatic carcinoid tumors are exceedingly rare (Gravante et al 2008; Nikfarjam et al 2004), and their identity must be demonstrated by confirmation that there is no carcinoid in other sites at the time of the operation and by various imaging examinations
Summary
Carcinoid tumors are slow-growing tumors originating in the neuroendocrine cells, and occur most frequently within the gastrointestinal tract (Maggard et al 2004; Nikfarjam et al 2004). Case 1 A 70-year-old male with past medical history of a squamous cell carcinoma of the skin underwent a computed tomography (CT) examination for the assessment of distant metastasis. Abdominal unenhanced CT showed a heterogeneous hypodense mass 12 cm in diameter, mainly in the right lobe of the liver (Figure 2a). Abdominal arteriograms showed irregular tumor staining, which was supplied by the stretching right and middle hepatic arteries (Figure 2f ). Based on these imaging findings, hepatic hemangioma with remarkable degeneration was suspected. After a follow-up of 43 months, an extended right lobectomy was performed because the mass had increased in size, and due to the fact that her abdominal pain had intensified. No recurrence was found at 30 months after the operation
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