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Development of the Lymphatic System

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The development of lymphatic tissues and vessels in embryonic life begins around the fifth week. These structures originate from the mesoderm layer, with lymph sacs emerging from developing veins.
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Updated: May 19, 2026

Surgical Treatment of an Endolymphatic Sac Tumor

Surgical Treatment of an Endolymphatic Sac Tumor

Published on: May 26, 2023

Endolymphatic sac tumour.

Mohammad Zulkarnaen¹, Ing Ping Tang, Siong Lung Wong

¹Department of Pathology, Faculty of Medicine and Health Science, Universiti Malaysia Sarawak. anmzulkarnaen@fmhs.unimas.my

The Malaysian Journal of Pathology

|August 9, 2012

Summary

This summary is machine-generated.

A rare endolymphatic sac tumour caused a man's facial pain and hearing loss. Surgical removal confirmed this low-grade adenocarcinoma, highlighting the need for combined diagnostic methods.

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Area of Science:

Neuro-oncology
Otolaryngology
Pathology

Background:

Cerebellopontine angle (CPA) tumours are rare, with varied presentations.
Endolymphatic sac tumours (ESTs) are uncommon, slow-growing adenocarcinomas originating from the endolymphatic sac.

Observation:

A 41-year-old man presented with left-sided facial pain, ear pain, dizziness, nystagmus, and hearing loss.
CT scan revealed a destructive lesion at the left CPA.

Findings:

Surgical excision was performed, and pathological analysis confirmed an endolymphatic sac tumour.
This case illustrates the clinical and radiological features of an EST.

Implications:

Accurate diagnosis of ESTs requires integrating clinical symptoms, imaging findings, and histopathological correlation.
Early recognition and surgical management are crucial for favorable outcomes in CPA tumours.