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Abstract：
This paper discusses the differential diagnosis of an unusual calcified mass found in the pelvic cavity of 45+-year-old female excavated from 15th-18th century Lisbon (Portugal). The mass is relatively large, irregularly shaped, and exhibits a concave base with malformed teeth embedded within its inner surface. Considering its macroscopic and radiological characteristics, several conditions were considered in the differential diagnosis, namely eccyesis, fetus in fetu, lithopaedion, and ovarian teratoma. However, the morphological features of the specimen, such as its structure, morphology, and dimensions, are diagnostic of a teratoma. Its location and the sex of the individual are more specifically compatible with a calcified ovarian teratoma. With regional and temporal variations in the frequency of tumours, the report of new cases becomes imperative, especially from geographic regions where few cases have been identified. In fact, this appears to be the first case of ovarian teratoma detected in the Portuguese archaeological record and adds to the few palaeopathological cases described in the osteoarchaeological literature worldwide.
摘要：
本文讨论了在15-18世纪里斯本（葡萄牙）出土的45岁女性盆腔中发现的异常钙化肿块的鉴别诊断。质量相对较大，不规则形状,并表现出凹形基部，其内表面嵌入畸形齿。考虑到其宏观和放射学特征，在鉴别诊断中考虑了几种情况，即eccyesis，胎儿在fetu，Lithopaedion,和卵巢畸胎瘤.然而,标本的形态特征，比如它的结构，形态学,和尺寸，是畸胎瘤的诊断.它的位置和个体的性别更具体地与钙化的卵巢畸胎瘤相容。随着肿瘤频率的区域和时间变化，新病例的报告变得势在必行，特别是来自很少发现病例的地理区域。事实上,这似乎是葡萄牙考古记录中发现的第一例卵巢畸胎瘤，并增加了全世界骨考古文献中描述的少数古病理学病例。
