Case 84. Pneumocystosis (3 y-o M)

　 　 　 　
　 Fatal interstitial pneumonia after chemotherapy for disseminated adrenal neuroblastoma 　
　 　 　 　

　

 　 Frothy exudates into the alveolar pace are pathognomonic of pneumocystosis (HE). Septal thickening and swelling alveolar pneumocytes are associated.