37 yo male, treated for myelodysplasia, is hospitalised for fever, aplasia, and pneumonia. His condition worsened, and developped respiratory distress, leading to endobronchic evacuation of mucoid gelatinous casts, sent for pathology.

Homme de 37 ans connu et trait pour syndrome myelodysplasique, hospitalis dans un contexte d'aplasie fbrile et de pneumonie. Ses fonctions respiratoires se dtriorant, une bronchoscopie est ralise pour vacuer des moules bronchiques glatineux.

Bronchus, biopsy. Low power, marked inflammatory changes, with surface epithelial erosion, and active congestive pattern of underlying connective tissue.

PAS stain, discloses hyphae implanted on the surface epithelium, and invading the connective tissue, with vascular extention.

Silver Grocott's stain discloses the features of the mycelium.

Hyphae are broad, septate and branch at about 45 degree.

Diagnosis: Bronchopulmonary aspergillosis