| A Case of Ectopic Endolymphatic Sac Tumor Occurring in the Middle Ear |
Sung Ho Cho
, Chanmi Lee
, Min-Chae Jeon
, Kyoung Ho Park
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| Department of Otolaryngology-Head and Neck Surgery, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea |
| 중이 내에 발생한 이소성 내림프낭 종양 1예 |
| 조성호
, 이찬미
, 전민채
, 박경호
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| 가톨릭대학교 의과대학 서울성모병원 이비인후-두경부외과학교실 |
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Received: 24 December 2024; Revised: January 9, 2025 Accepted: 16 January 2025. Published online: 27 March 2025. |
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| ABSTRACT |
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Endolymphatic sac tumors (ELISTs) are rare, locally aggressive tumors that typically arise in the petrous portion of the temporal bone, often presenting with hearing loss, tinnitus, and vertigo. Here, we report a 57-year-old female presenting with ear-fullness and a reddish mass in the middle ear, which was initially suspected as a glomus tumor, with no other symptoms. Imaging showed no characteristic bone erosion, and as it was difficult to diagnose pathologically, the diagnosis of ectopic ELIST was made based on clinical evaluation. This unusual case of an ectopic ELIST confined to the middle ear suggests that these tumors can occur outside their conventional location, underscoring the need for their inclusion in the differential diagnosis of middle ear neoplasms and for further research into their pathophysiology and origins. |
| Keywords:
Earㆍ Endolymphatic sacㆍ Neoplasms |
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