Fig. 4From: Coexistence of pulmonary lymphangioleiomyomatosis and pulmonary angiomyolipomaBiopsy specimen of the lung. a and b The cystic lesion’s walls exhibit the accumulation of some spindle-shaped cells which are positive for HMB45 staining. HE × 10 (a), HMB45 × 60 (b). c and d The nodular lesion is a mixture of adipose tissue, smooth muscle, and small blood vessels. HE × 10 (c), HE × 60 (d)Back to article page