Abstract

The results of analysis of a bone tissue neoplasm on the mandible of an Early Mesozoic temnospondyl amphibian Benthosuchus korobkovi Ivachnenko from the Tikhvinskoe locality (upper reaches of the Volga River, Yaroslavl oblast (Region); Lower Triassic, Lower Olenekian substage) are presented. The use of multispiral computed tomography enabled a rather well justified conclusion of the neoplastic (tumor) character of this pathological formation. Non-odontogenic osteoma is the most likely diagnosis, but hemangioma and fibrotic dysplasia cannot be ruled out either.

中文翻译：

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四足动物肿瘤骨病变的最早病例

摘要

给出了Tikhvinskoe地区（伏尔加河上游，雅罗斯拉夫尔州（地区），下三叠纪，下奥列尼克阶）的中生代早期两栖类两栖动物两栖动物Benthosuchus korobkovi Ivachnenko的下颌骨上的骨肿瘤的分析结果。使用多螺旋计算机体层摄影术可以对这种病理形成的赘生性（肿瘤）特征做出相当合理的结论。非牙源性骨瘤是最可能的诊断，但是血管瘤和纤维化异常增生也不能排除。