6. 병리 조직학적 분류는 망상형 12예 (48%), 여포형 9예 (36%), 혼합형 4예 (16%)의 순이었으며 재발된 군에서는 여포형이 5예로 가장 많았다.
7. 치성 낭종에서 유래된 법랑아세포종은 6예였고 그중 5예가 함치성 낭종에서, 1예는 치성 각화성 낭종에서 유래되었다.
8. 조직 화학적 소견에서 종양실질 상피도는 재발하지 않은 군과 재발한 군 모두 기저막에 둘러쌓여 있었으며 초자화물질과 당원 과립의 정도는 두군 모두 차이가 없었다.
[영문]
The purpose of this study is to compare ameloblastoma with and without recurrence on pathological and histochemical findings.
The author studies 25 cases of ameloblastomas obtained materials from the Dept. of Oral pathology, College of Dentistry, Yonsei University for the period of Jan. 1977 to Dec. 1986.
1. Of 25 cases, recurrent cases were 7 cases, among which 4 cases were treated by enucleation, 2 cases by curettage and 1 case by segmental resection.
2. 25 cases of ameloblastoma occurred at any age groups but the 2nd decade was the most commonly involved. The average age was 33.6 years. The ratio of male and female was 1.8 : 1 which has slight predilection for male, and it was 5 : 2 in recurrent cases.
3. The most favorate site of ameloblastoma was posterior region of mandible (19 cases) and the next was anterior region (4 cases). The anterior and posterior region of maxilla were also involved (1 case, each other).
4. The major sign and symptom was swelling. Pain and pus discharge were also noticed. As to the clinical duration, 14 cases (56%) were found within 1 year and 21 cases (84%) within 2 years.
5. Radiographically, unilocular pattern (13 cases, 54%) was the most common form and multilocular (9 cases) and soap bubble (3 cases) were also common forms.
6. Histopathologically, the main histologic pattern was plexiform pattern (12 cases, 48%). Follicular pattern (9 cases, 36%) and mixed pattern (4 cases, 16%) were also exhibited. In recurrent cases, the most common pattern was follicular pattern (5 cases) and the next common patterns were plexiform (1 case) and mixed (1case).
7. Histopathologically, ameloblastomas originated from odontogenic cyst were 6 cases, of which 5 cases were originated from dentigerous cyst and 1 case from odontogenic keratocyst.
8. In histochemical findings, the ameloblastic epithelial islands were surrounded by basement membrane. And there were no differences about hyalinized materials and glycogen in tumor cells between ameloblastoma with and without recurrent cases.