Malignant Gastrointestinal Stromal Tumor in a Patient with Neurofibromatosis type 1

Neurofibromatosis type 1 (von Recklinghausen's disease, NF-1) is an autosomal-dominant neurocutaneous disorder characterized by abnormal skin pigmentation (cafe au lait spots and axillary freckling), cutaneous and plexiform neurofibromas, skeletal dysplasias, and Lisch nodules (pigmented iris hamartomas). Gastrointestinal stromal tumors (GISTs) are the most common tumors of mesenchymal origin in the gastrointestinal tract, mesentery, omentum, and retroperitoneum. Here, we report a case of GIST in the ileum of a 76-year-old woman previously diagnosed as NF-1. She was admitted due to sudden onset of abdominal pain. Contrast enhanced CT scan revealed a moderately defined, peripherally enhanced soft tissue mass of about 8.8 x 7.3 cm, originating from the small bowel in the left of the abdomen. Surgical excision was performed and the tumor was found to be composed of tumor cells that were positive for c-kit protein. The patient started imatinib treatment a month later, but stopped medication due to dyspepsia after a few months and eventually progressed after 18 months.

A Case of Pulmonary Vein Tumor Presenting as a Left Atrial Mass

Primary cardiac tumors are extremely rare and can originate within the heart or be the result of tumor spread from other sites. We report a female patient with a pulmonary vein tumor extending into the left atrium that had a suspicious primary malignant origin with a sacral metastatic carcinoma. The patient was admitted complaining of pain in her buttock area as a result of a sacral tumor. It was believed that the sacral tumor was a metastasis from the imaging study and clinical manifestation. The primary malignant origin was evaluated. The chest CT showed a left atrium thrombus-like lesion without a pulmonary abnormality. After a transesophageal echocardiogram, the patient was diagnosed with a pulmonary vein tumor extending to the left atrium. The patient was given palliative radiotherapy for the sacral pain. Initially, the clinical impression was a metastatic sacral tumor with a thromboembolism of the left atrium. However, this patient was finally diagnosed with a pulmonary vein tumor with a left atrium extension by a transesophageal echocardiogram.

A Comparative Cross-sectional Study of the Development of Hepatocellular Carcinoma in Patients with Liver Cirrhosis Caused by Hepatitis B Virus, Alcohol, or Combination of Hepatitis B Virus and Alcohol / 대한소화기학회지

BACKGROUND/AIMS: Alcohol may be a cocarcinogen in patients with chronic viral hepatitis. We investigated the effect of alcohol on the development of hepatocellular carcinoma (HCC) in liver cirrhosis (LC) caused by hepatitis B virus (HBV). METHODS: All patients with LC or HCC associated with HBV or alcohol, admitted between March 2001 and June 2005, were included. Patients were divided into three groups according to the etiology of LC: Alcohol (AL), HBV, or HBV+alcohol (HBV+AL). Age and laboratory data at the enrollment of study were analyzed. The logistic regression coefficiency for the prevalence of HCC was calculated by using variables such as age, gender, serologic markers, and etiology of LC. RESULTS: In LC patients (n=342), the proportions of AL, HBV, and HBV+AL groups were 44%, 39%, and 17%, respectively. The proportions of HCC in AL, HBV and HBV+AL groups were 17%, 55%, and 76%, respectively. Age at the diagnosis of HCC was younger in HBV+AL than in AL group (p=0.036). In logistic regression analysis for the risk factor of HCC, odds ratio of age was 1.056 (p<0.001). Odds ratios of HBV and HBV+AL group comparing AL were 8.449 (p<0.001) and 17.609 (p<0.001), respectively. Therefore, old age and chronic alcohol intake in patients with HBsAg were the risk factors of HCC. CONCLUSIONS: Chronic alcohol intake may be an additive factor for the development of HCC in patient with LC caused by HBV. However, a prospective cohort study is needed to confirm these findings.

CA Case of Non-traumatic Hemobilia due to Pseudoaneurysm of the Hepatic Artery / 대한소화기내시경학회지

Hemobilia is a cause of obscure gastrointestinal hemorrhage. Most cases have an iatrogenic or traumatic origin but cases of hemobilia with non-traumatic causes are rare. The non-traumatic causes of hemobilia are inflammation, gallstones, neoplasm and vascular lesions. Currently, various therapeutic options are available for hemobilia, and transarterial embolization is now the first line of intervention used to stop the bleeding of hemobilia, which shows a high success rate of approximately 80% to 100% with a lower morbidity and mortality rate than with surgery. We report a rare case of non-traumatic hemobilia caused by a pseudoaneurysm of the hepatic artery that was successfully treated with transarterial embolization.