[原著］小児縦隔奇形腫の1治験例

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A case of mediastinal teratoma in a 5-year-old girl is herein reported. She presented with chest pain and an abnormal shadow on the chest X-ray findings. CT and MRI demonstrated a right anterior mediastinal cystic tumor measuring 5cm in diameter with areas of calcification, solid lesions and fatty tissue, and right pleural effusion. Tumor markers such as AFP, h-CG, and urinary VMA and HVA were all within the normal limits. Tumor involvement to the adjacent organs was suspected based on the diagnostic imaging findings before operation. Subsequently, we performed a right thoracotomy with a possible diagnosis of potentially malignant teratoma. Fortunately, the tumor was localized with inflammatory adhesions to the lung, aorta, and pericardium. The tumor was completely resected. The tumor was oval shaped and measured 5cm in size. On cut section, the tumor contained a small amount of brown fluid. The tumor was cystic with intracystic polypoid projections. Histologically, the tumor was composed of pancreatic tissue, gastrointestinal tissue, bone tissue and fatty tissue. It was finally diagnosed to be a benign, mature teratoma. The patient showed an uneventful postoperative course and is presently doing well with no evidence of recurrence. This case and other similar reported cases suggest that it is difficult to differentiate inflammatory adhesions from tumor infiltration to adjacent organs based on the diagnostic imaging findings alone.
琉球医学会,Ryukyu Medical Associationの論文

[原著］小児縦隔奇形腫の1治験例

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