Li T J, Kitano M, Arimura K, Sugihara K
Department of Oral Pathology, Kagoshima University Dental School, Japan.
Arch Pathol Lab Med. 1998 Apr;122(4):371-4.
Unicystic ameloblastoma is believed to be less aggressive and responds more favorably to conservative surgery than the solid or multicystic ameloblastomas. We report a case of unicystic ameloblastoma that was initially treated by marsupialization and later by enucleation under suspicion of a dentigerous cyst. The neoplastic nature of the lesion became evident only when the enucleated material was available for histologic examination. Apart from an ameloblastomatous epithelial lining and luminal tumor nodules, the cystic tumor contained numerous tumor islands within its fibrous capsule. The lesion recurred 8 years after the enucleation. This case supports the view that the presence of tumor islands in the fibrous capsule may indicate a high risk of recurrence for unicystic ameloblastomas. Relevant diagnostic problems and choice of treatment are presented along with a review of the literature.
单囊性成釉细胞瘤被认为比实性或多囊性成釉细胞瘤侵袭性更小，对保守手术的反应更好。我们报告一例单囊性成釉细胞瘤，最初采用袋形缝合术治疗，后来在怀疑为含牙囊肿的情况下进行了摘除术。仅当摘除的组织可用于组织学检查时，病变的肿瘤性质才变得明显。除了成釉细胞瘤样上皮衬里和腔内肿瘤结节外，囊性肿瘤在其纤维包膜内还含有许多肿瘤岛。摘除术后8年病变复发。该病例支持这样的观点，即纤维包膜内存在肿瘤岛可能表明单囊性成釉细胞瘤复发风险较高。本文还结合文献复习介绍了相关的诊断问题和治疗选择。
