caa a22 4500 388083018 CHVBK 20180307125222.0 cr unu---uuuuu 161130e199903 xx s 000 0 eng 10.1017/S0022215100143774 doi S0022215100143774 pii (NATIONALLICENCE)cambridge-10.1017/S0022215100143774 Eustachian tube teratoma and its terminological correctness [Elektronische Daten] Teratomas are germ cell tumours usually found in the young and are characteristically composed of tissue foreign to the place where they arise. Two teratomas of the middle ear were first described in 1866 and since then, and to the best of our knowledge, 19 additional cases have been reported in the literature under different terms such as hairy congenital polyps, epidermoid cysts, dermoid cysts, hamartoma, cutaneous teratoma and teratomas. The difficulty in classifying germ cell tumours may explain the different terminologies encountered in the literature. The authors describe a case of teratoma of the eustachian tube presenting as a mass in the middle and external ear of a 10-week-old girl. Using this case, a review of the literature is performed in light of the new classification of germ cell tumours proposed by the World Health Organization (WHO). It is of note that most of the teratomas that present in the middle ear arise from, or involve, the eustachian tube. Copyright © JLO (1984) Limited 1999 Eustachian tube nationallicence Ear, middle nationallicence Teratoma nationallicence Cholesteatoma nationallicence Ruah Carlos B. Department of Otolaryngology of the Faculty of Medical Sciences of the New University of Lisbon, Portugal Cohen David Department of Pathology of the Hertzlia Medical Center, Hertzlia, Israel and the Ear Research Laboratory, Sackler School of Medicine and Bioengineering Program, Tel-Aviv, Israel. Sadé Jacob Sara and Felix Dumont Chair of Hearing Research, Sackler School of Medicine and Bioengineering Program, Tel-Aviv, Israel. The Journal of Laryngology & Otology Cambridge University Press 113/3(1999-03), 271-274 0022-2151 113:3<271 1999 113 JLO https://doi.org/10.1017/S0022215100143774 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0022215100143774 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ruah Carlos B. Department of Otolaryngology of the Faculty of Medical Sciences of the New University of Lisbon, Portugal NATIONALLICENCE 700 1- Cohen David Department of Pathology of the Hertzlia Medical Center, Hertzlia, Israel and the Ear Research Laboratory, Sackler School of Medicine and Bioengineering Program, Tel-Aviv, Israel NATIONALLICENCE 700 1- Sadé Jacob Sara and Felix Dumont Chair of Hearing Research, Sackler School of Medicine and Bioengineering Program, Tel-Aviv, Israel NATIONALLICENCE 773 0- The Journal of Laryngology & Otology Cambridge University Press 113/3(1999-03), 271-274 0022-2151 113:3<271 1999 113 JLO CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge