Fibrous Histiocytoma or Xanthoma

Epidemiology

  • Rare tumor in lung

Physiology

  • Benign lung post-inflammatory pseudotumor

Pathology

  • Histiocytes with eosinophilic or foamy cytoplasm/ fibroblasts/ fibrous tissue/ scant plasma cells
  • Must distnguish from Fibroma

Diagnosis

  • FOB: may occur endobronchially
  • CXR/Chest CT Pattern: solitary nodule (usually 2-5 cm, but may be large)
    • May grow slowly but usually stable over time
    • Location: no lobar predilection
    • Calcification: rare
    • Cavitation: none

Clinical Presentations

  • Symptoms of Obstruction (see [[Obstructive Lung Disease]])

Treatment

  • xxx

References

  • xxx