西 律¹, 鶴海 博¹, 北川 友朗¹, 秋元 寛¹, 丸川 治　¹, 李 喬遠¹, 水谷 均¹, 曽我部 俊大¹, 前田 正明², 村田 喜代史³

Takashi NISHI¹, Hiroshi TURUMI¹, Tomoo KITAGAWA¹, Hiroshi AKIMOTO¹, Osamu MARUKAWA¹, Kyowon LEE¹, Hitoshi MIZUTANI¹, Toshihiro SOGABE¹, Masaaki MAEDA², Kiyoshi MURATA³

¹京都洛西シミズ病院外科, ²京都洛西シミズ病院内科, ³京都洛西シミズ病院放射線科

¹Department of Surgery, Rakusai Shimizu Hospital, ²Department of Internal Medicine, Rakusai Shimizu Hospital, ³Department of Radiology, Rakusai Shimizu Hospital

キーワード : Ganglioneuroma, Adrenal tumor, Ultrasonography

A 37-year-old male who complained of left upper abdominal pain was revealed to have a well demarcated ovoid tumor of the left adrenal gland upon ultrasonography (US). The tumor has a solid echo pattern and generally hypoechoic internal echo, but there was mildly heterogeneous hyperechoic area. Total excision of the tumor was performed. The tumor was firm, 10.0×6.0×6.0 cm in size and weighed 280 g. Its cut surface was smooth and yellowish white. Microscopically typical findings of the ganglioneuroma were found, indicating the persence of large ganglion cells in a fibrous stroma. Ganglioneuroma occurring in the adrenal gland is relatively rare, and this case is only the 55th to be reported in Japan. Over the past three years, 27.8% of all reported cases were diagnosed by US. Most of the cases had a homogeneous hypoechoic pattern, however, one-third of the cases showed a heterogeneous hyperechoic area, like that in our case.