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Case 107. Peptostreptococcal brain abscess (79 y-o M)
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Biopsy from a cavity-forming cerebrocortical lesion
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Key words : Peptostreptococcus, brain abscess, oral flora
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| The abscess cavity is filled with neutrophils (HE, low power). The causative microbe, Peptostreptococcus sp., is an anerobic normal flora of the oral cavity | Small-sized, Gram-positive cocci are clustered within the abscess cavity (Gram). The cocci are much smaller than Staphylococcus aureus or Streptococcus pyogenes. | |
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| Reference case 107A Another case (56 y-o M) of brain abscess formed in the cerebellum, directly extending from otitis media. The abscess lesion is formed adjacent to the cerebellar cortex (HE). Brain abscess is a serious complication of otitis media. |
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