We present the case of a 10-year-old girl with biliary atresia in whom focal nodular hyperplasia (FNH) of the liver occurred following successful "Kasai" hepatic portoenterostomy at the age of 2 months. Her jaundice completely disappeared a few weeks after the operation. A 4-cm diameter liver tumor in segment IV was found when she was 5-years old. Needle biopsy could not establish a definitive diagnosis. Because the tumor size was not changing, she was conservatively followed by abdominal echo at an outpatient clinic. She showed progressive liver dysfunction and ongoing cirrhosis, and so at the age of 10 years, she received living donor liver transplantation at our institute. The tumor was pathologically diagnosed as a FNH. Though a FNH in biliary atresia patients is extremely rare, there are only two cases reported in the literature; it should be considered in the differential diagnosis for a hepatic nodule during a long follow-up course in patients with biliary atresia.
In this paper, the iteration formulae to determine the optimum frequency band partition for subband image coding are derived theoretically. From the numerical results, it is shown that the optimum partition for the image is near to the partition by wavelet transform.
We describe here a child with angiodysplasia of the small intestine, diagnosed by doubleballoon endoscopy (DBE), who was treated with transumbilical single-incision laparoscopic surgery (T-SILS). A 9-year-old boy presented to another hospital with intermittent fresh melena of a duration of 5 months and 4 days. Anoscopy and gastric mucosal membrane scintigraphy were unsuccessful diagnostically, and he was referred to our hospital for further examination and treatment. Under general anesthesia, we performed DBE by an anal route, with the ileum assessed for a distance of about 150 cm from the ileocecal valve. Although no bleeding lesion was found in the colon, a flat elevated venous lake approximately 20 mm in size was observed 20 cm from the ileocecal valve, suggesting angiodysplasia of the small intestine. A tattoo was made under DBE, and wedge resection by T-SILS was performed 1 month later under general anesthesia. The excised specimen appeared as a flat, elevated venous lake approximately 20 mm in size. Histopathologic analysis revealed several dilated and distorted veins within the submucosa of the small intestine. The patient was diagnosed with angiodysplasia of the small intestine. His postoperative course was uneventful, and he remained free of recurrent gastrointestinal bleeding 18 months after the operation. This is the first case report showing the diagnosis, localization, and tattooing of an obscure gastrointestinal bleeding lesion of the small intestine by preoperative DBE and removal of the lesion by subsequent T-SILS in children.
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