Paraquat is a fatal, rapid-acting, nonselective herbicide. Despite the restriction of production and sales of the herbicide in Korea since 2012, already purchased paraquat can incur poisoning. This article describes a 25-month-old boy who accidentally ingested old paraquat on a rural road. After initial decontamination at 2 outside hospitals, he was transferred to the intensive care unit. Given the urine drug concentration of 20,000 ng/mL 2 hours after the intoxication, he received charcoal hemoperfusion and continuous venovenous hemofiltration to enhance the excretion of the herbicide. In 36 hours after intoxication, it was not detected in the urine. The boy was discharged uneventfully on day 8. This case highlights the importance of hemoperfusion in paraquat poisoning.

Extramammary Paget's disease is a neoplastic disease, which usually manifests as an erythematous plaque on the genital area. Pigmented extramammary Paget's disease is a rare variant. It should be differentiated from malignant melanoma. We report a case of pigmented extramammary Paget's disease in a 62-year-old male who had a brown-to-black or erythematous-colored plaque on the scrotum and inguinal area. Histopathologic findings showed features typical to extramammary Paget's disease, with proliferation of epidermal melanocytes and dermal melanin pigments.
Humans ; Male ; Melanins ; Melanocytes ; Melanoma ; Middle Aged ; Paget Disease, Extramammary* ; Scrotum

Takayasu's arteritis is generally recognized as a chronic, idiopathic, inflammatory disease, which affects the aorta and the proximal portions of its major branches. We experienced a patient with Takayasu's arteritis who was presented with main pulmonary artery stenosis and right coronary ostial occlusion without involvement of aorta nor its major branches. She was managed with pulmonary arterioplasty and coronary artery bypass graft. This case emphasize that the disease cannot affect the aorta.
Aorta ; Constriction, Pathologic* ; Coronary Artery Bypass ; Coronary Vessels* ; Humans ; Pulmonary Artery* ; Takayasu Arteritis* ; Transplants

Leiomyomas, originating in the bile duct, are very rare, and only few cases have been reported in the literature. We experienced a case of leiomyoma of the distal common bile duct, mimicking bile duct cancer. A 39-year-old woman presented with intermittent jaundice and general weakness for three months. Clinical profiles showed obstructive jaundice, and the abdominal computed tomography and cholangiography revealed diffuse bile duct dilatation with distal common bile duct stricture. A pylorus-preserving pancreaticoduodenectomy was performed and the pathologic specimen disclosed leiomyoma of the common bile duct accompanying severe fibrosis. This is the first case of leiomyoma in the bile duct reported in Korea.
Adult ; Common Bile Duct Neoplasms/*diagnosis/pathology/surgery ; Female ; Humans ; Leiomyoma/*diagnosis/pathology/surgery ; Pancreaticoduodenectomy