Abstract
BackgroundOral metastasis by hepatocellular carcinoma (OMHCC) is extremely rare, and the prognosis had been reported quite poor due to simultaneous multiple organ metastases. In this study, we report clinical features and survival of 10 new cases of OMHCC and suggest the criteria for palliative surgery.MethodsA retrospective clinical study including 10 new cases of oral OMHCC between 2006 and 2016 was performed. Clinical features and survival analysis were examined. The recorded variables were age, sex, site of oral metastases, size of oral tumor (largest diameter), and survival after oral histopathologic diagnosis.ResultsThere was male (n=8) predilection of OMHCC. The mean survival time was 16.9 months. Patient age ranged from 40 to 71 years (mean 56.5). Eight mandibular and two maxillary lesions were found. One patient showed simultaneously the maxilla and the oral tongue involvement. The most often encountered symptoms were swelling (80%) followed by pain (60%), numbness (60%), bleeding (10%), and tooth mobility (10%). Four patients underwent operation due to spontaneous bleeding and swelling of the cancer. Overall (from onset of hepatocellular carcinoma) and truncated survival (from onset of OMHCC) were 71.9 and 13.1 months respectively.ConclusionThe prognosis of OMHCC was quite poor. Oral and jaw bone examination should be included in patients with multiple metastasis of HCC. Palliative surgery might be performed in patients who reported spontaneous bleeding, severe pain, and oral dysphasia due to tumor enlargement.
Highlights
Oral metastasis by hepatocellular carcinoma (OMHCC) is extremely rare, and the prognosis had been reported quite poor due to simultaneous multiple organ metastases
Oral metastatic cancer from distant organ cancer is relatively rare compared with oral squamous cell carcinoma, and it consists of approximately 1% of all oral cavity cancers [4,5,6]
Clinical features There were ten patients who were diagnosed with OMHCC (Table 1, Fig. 1)
Summary
Oral metastasis by hepatocellular carcinoma (OMHCC) is extremely rare, and the prognosis had been reported quite poor due to simultaneous multiple organ metastases. HCC has a tendency to metastasize to other organs such as bone and soft tissues at the advanced stage. Oral metastatic cancer from distant organ cancer is relatively rare compared with oral squamous cell carcinoma, and it consists of approximately 1% of all oral cavity cancers [4,5,6]. Such metastases can occur to both bone and the oral soft tissues.
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