Rounded atelectasis

Rounded atelectasis is a benign pathology of the lung that may be mistaken for lung cancer.

General

• Benign.
• May be biopsied to rule-out malignancy.

Microscopic

Features:

• Pleural fibrosis.

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Lung Lesion, Right Lower Lobe, Core Biopsy:
- Benign fibrous tissue and skeletal muscle.
- NEGATIVE for lung parenchyma. 
- NEGATIVE for evidence of malignancy.

Comment:
Clinical correlation is suggested.

See also

• Lung tumours.