Takeaki Ishizawa

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BACKGROUND & AIMS The surgical indications for multiple hepatocellular carcinomas (HCCs) and for HCC with portal hypertension (PHT) remain controversial. METHODS We reviewed 434 patients who had undergone an initial resection for HCC and divided them into a multiple (n = 126) or single (n = 308) group according to the number of tumors. We also classified(More)
BACKGROUND Although intraoperative cholangiography has been recommended for avoiding bile duct injury during laparoscopic cholecystectomy, radiographic cholangiography is time consuming and may itself cause injury to the bile duct. Recently, a novel fluorescent cholangiography technique using the intravenous injection of indocyanine green (ICG) has been(More)
BACKGROUND We have often encountered difficulties in identifying small liver cancers during surgery. Fluorescent imaging using indocyanine green (ICG) has the potential to detect liver cancers through the visualization of the disordered biliary excretion of ICG in cancer tissues and noncancerous liver tissues compressed by the tumor. METHODS ICG had been(More)
Although the use of single-incision laparoscopic cholecystectomy (SILC) is spreading rapidly, this technique has disadvantages. It does not allow for sufficient surgical views to be obtained or for intraoperative radiographic cholangiography to be performed. Fluorescent cholangiography using a preoperative intravenous injection of indocyanine green (ICG)(More)
BACKGROUND Although portal venous tumor thrombus (PVTT) is regarded as an ominous prognostic factor in patients with hepatocellular carcinoma (HCC), the optimal treatment method for maximizing both safety and long-term outcome has not yet been discussed. We describe a surgical technique in which the venous wall is peeled off from the PVTT. METHODS In the(More)
BACKGROUND For safe laparoscopic cholecystectomy, surgeons must possess detailed knowledge of the anatomy of the bile duct and arterial system as seen through a laparoscope. STUDY DESIGN We developed an indocyanine green (ICG) reinjection technique for use in fluorescent angiography. Here, we evaluated the efficacy of the ICG reinjection technique in(More)
Endorectal ultrasonography (ERUS) with a flexible-type radial scanner (Aloka Co. Ltd., Tokyo, Japan; 7.5 MHz) was applied to 120 patients with rectal cancer for the assessment of wall invasion and pararectal lymph node metastasis. Normal rectal wall was described as a five- or seven-layer structure excluding the lowest part within 3 cm from the anal verge.(More)
BACKGROUND Controversy exists as to whether autotaxin (ATX) may be importantly associated with pathophysiology of hepatocellular carcinoma (HCC). METHODS We evaluated serum ATX levels and its mRNA expression in consecutive 148 HCC patients treated with radiofrequency ablation (RFA) and 30 patients with hepatic resection. RESULTS Although increased serum(More)
Imaging detection of liver cancers and identification of the bile ducts during surgery, based on the fluorescence properties of indocyanine green, has recently been developed in liver surgery. The principle of this imaging technique relies on the intravenous administration of indocyanine green before surgery and the illumination of the surface of the liver(More)