Clinical features and treatment of endolymphatic sac tumor

Seong Hoon Bae, Seung seob Kim, Sang Hyun Kwak, Jin Sei Jung, Jae Young Choi, In Seok Moon

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Background: Endolymphatic sac tumor (ELST) is an extremely rare disease that does not have established clinical guidelines. Objective: To provide guidance for the diagnosis and management of ELSTs. Methods: We retrospectively reviewed the medical records of patients who were suspected to have a lesion in the location of endolymphatic sac. Seven patients were included. Histopathologic diagnosis confirmed five ELSTs and two other diseases. Results: All of the enrolled patients had hearing impairment. Facial palsy was found in four out of five patients with ELST, whereas none of the patients in other disease group showed facial palsy. CT and MRI findings were consistent with those in previous literatures; however, angiographic findings were not consistent with those previously reported. All patients underwent surgery. Recurrence occurred in two patients with ELST, although there was no visible remnant tumor after the operation. These patients were treated with stereotactic radiosurgery. Conclusion: Hearing impairment and facial palsy were representative symptoms of ELST. All ELSTs showed ‘salt and pepper’ signal in MRI T1-weighted images, and smaller tumors could have blood supply from AICA in the radiologic study. Complete surgical resection with optional stereotactic radiosurgery should be considered in ELST.Highlights Hearing impairment and facial weakness are remarkable symptoms of ELST compared to other diseases that invade the endolymphatic sac. All ELSTs showed ‘salt and pepper’ signal in MRI T1-weighted images. ELST less than 3 cm in diameter could have blood supply from AICA. A complete surgical excision with optional stereotactic radiosurgery is required.

Original languageEnglish
Pages (from-to)433-437
Number of pages5
JournalActa Oto-Laryngologica
Issue number6
Publication statusPublished - 2020 Jun 2

Bibliographical note

Publisher Copyright:
© 2020, © 2020 Acta Oto-Laryngologica AB (Ltd).

All Science Journal Classification (ASJC) codes

  • Otorhinolaryngology


Dive into the research topics of 'Clinical features and treatment of endolymphatic sac tumor'. Together they form a unique fingerprint.

Cite this