Lipoma

Epidemiology

  • Uncommon etiology of pulmonary nodule (without endobronchial presentation)

Physiology

  • Benign lung neoplasm

Diagnosis

  • CXR Pattern: almost always present endobronchially, but may occasionally present as a solitary lung nodule
    • Appearance: well-define and homogenous
    • Location: no lobar predilection
    • Calcification: rare
    • Cavitation: none
  • Chest CT: useful to define fatty density
    • Low Density by Hounsfield Units Measurement: -50 to -300 HU is consistent with fat
    • Pure air or emphysema: -1000 HU
    • Normal lung parenchyma: -750 HU
    • Normal soft tissue and parenchymal lesions: around 10-70 HU
    • Calcified lesions: >100-400 HU
    • Bone: 1000 HU
  • FOB: almost always endobronchial in location

Clinical

  • Obstructive Symptoms (see [[Obstructive Lung Disease]]): atelectasis/post-obstructive pneumonia

Treatment

  • xxx

References

  • xxx