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To the editors, We read with great interest the article titled “DiffusionWeighted Magnetic Resonance Imaging for the Evaluation of Prostate Cancer: Optimal B Value at 3T” by Ji Hyun Koo et al. (1), published in the Korean Journal of Radiology (DOI: 10.3348/kjr.2013.14.1.61). This article will be a useful diffusion weighted imaging (DWI) guide for radiologists in assessing prostatic cancer. In the paper, the authors compared 4 different b values and suggested them for predicting prostate cancer; the optimal b value for 3T DWI was found to be 1000 s/mm. However, even with high b values, the overlap of the apparent diffusion coefficient (ADC) limits the accuracy of DWI in cancer detection, particularly in the transitional zone tissue, due to its lower ADC compared to the peripheral zone tissue (2). Therefore, we aimed to mention that, with

Dear Sir, We read the article entitled “Endovascular Revascularization for Patients with Critical Limb Ischemia: Impact on Wound Healing and Long Term Clinical Results in 189 Limbs” by Bae et al. (1), as published in Korean J Radiol (2013;14:430-438), with a great interest. This article may provide a useful guide for radiologists. In the paper, authors made a retrospective study on 189 limbs with critical limb ischemia, which were treated with endovascular revascularization between 2008 and 2010. Analysis was made using the Kaplan-Meier method. In our clinical

Dear Sir, We read the article titled ‘Modified Retroperitoneal Access for Percutaneous Intervention after Pancreaticoduodenectomy’ by Uei Pua et al. (1) published in Korean J Radiol (2013;14:446-450) with a great interest. Therein, authors reported two cases which needed retroperitoneal access. They approached the retroperitoneal space by using anterior pararenal trajectory. This technique is useful for pancreaticoduodenectomy patients whose anterior approach is challenged by surrounding vital organs

We have read the recent interesting article titled “Monosegmental Hepatobiliary Fibropolycystic Disease Mimicking a Mass: Report of Three Cases” by Kwon et al. (1), published in Korean Journal of Radiology. In this article, the authors briefly discussed the management of the biliary cystic lesions of the liver particularly fibropolycystic liver disease such as Caroli’s Disease. As mentioned by the authors in the article, these cystic lesions are formed by remodeling the ductal plate and communicating with the biliary tree. The authors stated that different types of fibropolycystic liver disease demonstrate characteristic findings at computed tomography (CT) and magnetic resonance (MR) imaging. Ultrasonography (US), CT, magnetic resonance cholangiopancreatography (MRCP), percutaneous transhepatic cholangiography, and endoscopic retrograde cholangiopancreatography can show the dilated

To the Editors: We have read the recent article by Lee et al. (1) with great interests. They reported multidetector computed tomography (MDCT), magnetic resonance cholangiopancreatography (MRCP) and endoscopic retrograde cholangiopancreatography (ERCP) findings of a unique case of a patient who presented incidentally-detected main pancreatic duct dilatation that was caused by the intrapancreatic-replaced common hepatic artery. In their report, they also emphasized that other organs such as esophagus, duodenum, common bile duct, or ureters can be compressed by aberrant origins or unusual course blood vessels, causing symptoms like dysphagia, jaundice, or hydronephrosis. Due to our special interest in the anatomical variation of the vessels and radiologic evaluation method of the unusual or aberrant vascular structures and its effects on the adjacent organs (2-6), we would like to contribute regarding the non-invasive and

Primary pancreatic hydatid cysts are rare and its percutaneous treatment and catheterization technique has, to the best of our knowledge, not been published in literature. A 33-year-old male patient who presented with abdominal pain was evaluated by ultrasonography (US) and computed tomography examinations. Both examinations revealed a cyst in the neck of the pancreas. After the administration of albendazole chemoprophylaxis, the patient underwent diagnostic puncture showing high pressure spring water which harbored the scoleces and was treated percutaneously by the catheterization technique. In this technique, first the cyst was punctured, the fluid content aspirated, the radiocontrast material injected to see possible fistulisation, and then re-aspirated. The 20% hypertonic saline solution was injected and re-aspiration was performed to the best of our abilities, followed by the insertion of a catheter for drainage of the remaining non-aspiratable fluid content. At follow-up examination, the cyst was not visible on US after 6 months. There was no evidence of cyst recurrence or dissemination after 18 months at serologic and imaging follow-up.