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Intrathecal Epidermoid Cyst
Joseph Junewick, MD FACR
over 4 years ago
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ARSt Case Repository

Middle Mediastinal Bronchogenic Cyst

Case Detail

Anatomy: Chest
Junewick
Joseph Junewick, MD FACR
Diagnostic Category: Developmental or Congenital
Created: over 6 years ago
Updated: over 6 years ago
Tags: PEDS
Modality/Study Types: CR CT
Activities:
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History

Adopted infant with history of tuberculosis exposure.


Case Images


Diagnosis

Bronchogenic Cyst

Findings

CR – Well circumscribed right-sided mass.

CT – Fluid attenuation middle mediastinal mass.

Pathology – Bronchogenic cyst lined by respiratory epithelium and cyst wall composed of fibromuscular connective tissue and occasional cartilage.

Discussion

Bronchogenic cysts are related to abnormal budding of the ventral diverticulum of the foregut. Most occur in the middle mediastinum but posterior mediastinum and intrapulmonary locations are also seen. Bronchogenic cysts are usually asymptomatic but airway compression can occur and result in lung collapse or hyperaeration. Intrapulmonary masses can enlarge rapidly and communicate with the bronchial tree. Bronchogenic cysts are sharply defined avascular masses containing fluid; occasionally calcification and complex fluid may be present.

Reference

Binkovitz L, Binkovitz I and Kuhn JP. The Mediastinum, in Caffey’s Pediatric Diagnostic Imaging, 11th Ed (2008).



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