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Pars Intermedia Cyst
Joseph Junewick, MD FACR
over 8 years ago
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ARSt Case Repository

Mediastinal Bronchogenic Cyst

Case Detail

Anatomy: Chest
Junewick
Joseph Junewick, MD FACR
Diagnostic Category: Developmental or Congenital
Created: over 5 years ago
Updated: over 5 years ago
Tags: PEDS
Modality/Study Types: CR CT
Activities:
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History

3 year old male with difficulty breathing.


Case Images


Diagnosis

Mediastinal Bronchogenic Cyst

Clinical Notes

Pathology – Thick wall cystic mass with fibrous tissue, mucous glands and cartilage lined by pseudostratified respiratory epithelium. No thymic or thyroid tissue present.

Findings

CR – Hazy opacity in left hemithorax with ipsilateral shift of the mediastinum and elevation of the left hemidiaphragm.

CT – Multiplanar imaging shows a cystic middle mediastinal mass and left lung atelectasis.

Discussion

Bronchogenic cysts are congenital lesions thought to result from abnormal budding of the ventral foregut. Most cysts are located in the mediastinum (usually middle) and less commonly within the lung parenchyma, pleura, or diaphragm (a stalk attaching the cyst to the mediastinum is often found). Bronchogenic cysts are sometimes found in association with other congenital pulmonary malformations. Most patients are diagnosed in the first few decades of life. Symptoms are present in just greater than half of patients with chest pain and symptoms related to mass effect on adjacent structures being the most common. Fluid within bronchogenic cysts is usually a mixture of water and proteinaceous mucus and may result in higher attenuation on measurement.

Reference

McAdams HP, Kirejczyk WM, Rosado-de-Christenson ML, et al. Bronchogenic Cyst: Imaging Features with Clinical and Histopathologic Correlation Radiology (2000); 217: 441-446.


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