Cystic lesions


Topic Completed: 1 December 2012

Minor changes: 4 February 2020

Copyright: 2003-2019,, Inc.

PubMed Search: Lymphangioma[TI] mediastinum

Hanni Gulwani, M.B.B.S.
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Cite this page: Gulwani H. Lymphangioma. website. Accessed December 6th, 2021.
Definition / general
  • Also called cystic hygroma
  • Benign proliferation of lymphatic channels
  • Common; in anterior, middle or posterior mediastinum or soft tissue of neck
  • Large lesions may compress lungs, heart, nerves but most lesions are asymptomatic and found on Xray
Radiology description
  • Xray: variegated appearance, appears to infiltrate mediastinal soft tissue
Case reports
Gross description
  • Gray-white masses, edematous appearing, variable sized cystic cavities, serous type fluid, smooth inner lining
Microscopic (histologic) description
  • Large, irregular vascular spaces lined by flattened, bland epithelial cells with fibroblastic or collagenous stroma
  • Variable lymphocytic infiltrates; no specialized epithelium, no cholesterol granulomas
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