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Hyperplastic polyposis syndrome (HPS) is a rare condition characterized by the presence of numerous hyperplastic polyps (HPs) in the colon and rectum. Patients with HPS have an increased risk of colorectal cancer. This link is associated with gene mutations, especially B type Raf kinase (BRAF). However, a case of HPS associated with gene mutations has seldom been reported in Korea. Here, we describe a case of HPS in which a BRAF mutation was present in a 34-year-old woman. She had more than 110 HPs in the stomach and colorectum, which we removed. All of the polyps were diagnosed histologically as HPs, and no adenomatous or malignant changes were noted. We performed a BRAF and K-ras mutation analysis as well as a microsatellite analysis on the resected colon polyps. BRAF mutations were found in the resected colon polyps, but there was no evidence of K-RAS mutation or microsatellite instability.

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Abstract. The number of sensors and the amount of data those sensors are collecting is increasing exponentially in the form of sensor networks collectively known as the Internet of Things (IoT). Using this large volume of IoT data in context-aware systems requires new preprocessing methods. This paper introduces an IoT data lifecycle, a proposed definition of an IoT-specific context tag, and required for an automated preprocessing method called data tagging before suggesting some uses of this IoT context tag and outlining possible directions for future research.