最近14年間の小児眼窩腫瘍56例の統計的考察

A 14-year review of orbital tumor in 56 infants and children

要約　過去14年間に当科で手術または生検を行い，病理組織学的に診断された15歳以下の眼窩腫瘍56例を検索した。男児27例，女児29例であり，初回手術時の年齢は2歳児14例が最も多かった。1例を除き，全例が片眼発症であった。腫瘍の部位は，筋円錐内7例，筋円錐内外8例，筋円錐外41例であった。筋円錐外の内訳は，眼窩上側10例，眼窩下側1例，眼窩耳側1例，涙腺部3例，眼窩縁25例であった。手術または生検の方法は，経眼窩縁49例，経頭蓋底7例，経結膜1例であった。経眼窩縁法のうち，6例が骨形成的骨切除を必要とした。良性腫瘍51例（91％），悪性腫瘍5例（9％）であり，その組織型は，類皮囊腫50％，血管腫23％などであった。

Abstract.　We reviewed 56 consecutive juvenile cases of orbital tumor during the past 14 years. All were under 15 years of age. The series comprised 27 males and 29 females. The age distribution showed a peak at 2 years comprising 14 cases. All were unilaterally involved except one. The orbital tumor was located intraconally 7 cases,intra-and extraconally 8 cases,and extraconally 41 cases. Surgery or biopsy was performed via orbitotomy 49 cases,craniotomy 7 cases,and transconjunctivally 1 case. Out of 49 cases that underwent orbitotomy,6 cases needed additional osteoplastic osteotomy. Histopathologically,51 cases（91％）were diagnosed with benign tumor and 5 cases（9％）with malignant one. The most common tumor was dermoid cyst（50％）followed by angioma（23％）.