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  • • Uncommon

    • < 1% of pulmonary tumors

    • Include:

    • -Fibromas

      -Leiomyomas

      -Neurofibromas

      -Myoblastomas

      -Benign metastasizing leiomyomas

    • Most lesions peripheral

Symptoms and Signs

  • • Peripheral: Asymptomatic

    • Central lesions: Cough, wheezing, hemoptysis, recurrent pneumonia

Imaging Findings

  • Chest film: 1-2 cm well-circumscribed, bosselated lower lung nodule with calcifications in 10-30%

  • • May be difficult to distinguish from malignant lesions; distinction may occur only after excision

  • • Chest x-ray

    • Bronchoscopy may be needed for central lesions

    • Pathologic diagnosis obtained by surgery or fine-needle aspiration

  • • Wedge resection

    • Lobectomy if involves proximal airway and associated with infections or bronchiectasis

Surgery

Indications

  • • Tissue diagnosis, if unobtainable by bronchoscopy

Prognosis

  • • Excellent

References

Gould MK et al. Accuracy of positron emission tomography for diagnosis of pulmonary nodules and mass lesions: a meta-analysis. JAMA. 2001;285:914.  [PubMed: 11180735]

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