Mediastinum
Cystic lesions
Lymphangioma

Author: Hanni Gulwani, M.D. (see Authors page)

Revised: 15 June 2018, last major update December 2012

Copyright: (c) 2003-2018, PathologyOutlines.com, Inc.

PubMed Search: Lymphangioma[TI] mediastinum

Cite this page: Gulwani, H. Lymphangioma. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/mediastinumlymphangioma.html. Accessed July 19th, 2018.
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
Epidemiology
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
Microscopic (histologic) images

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Lymphatic channels lined by attenuated endothelial cells