Subacute IPA in rhematoid nodules of the lung. in a patient with rheumatoid arthritis. Histology sections stained with H&E
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Notes:
Varying fields from a case of rheumatoid disease complicated by Aspergillus infection. At the margin there are pallisaded histiocytes, as seen in a rheumatoid nodule, with abundant Aspergillus in the cavity.
Pigmentation of Aspergillus versicolor colonies ranged from pale green to greenish-beige, pink-green, dark green and brown. Reverse is usually reddish. The growth rate is usually slow. Cultured on Sabouraud dextrose agar with chloramphenicol.
A Colonies on MEA +20% sucrose after one week; B ascomata x 40; C conidiophores x 920; D ascospores x2330; E ascoma x 230; F portion of ascoma with asci and ascospores, x 920.