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Fig. 3 | BMC Musculoskeletal Disorders

Fig. 3

From: Actinomycotic osteomyelitis of a long bone in an immunocompetent adult: a case report and literature review

Fig. 3

Pathologic findings of drained materials. a The haematoxylin-eosin stain (× 4), of the curettage specimen shows necrotic bone detritus (arrowhead) and inflamed granulation tissue consistent with osteomyelitis. We identified a sulfur granule (arrow). b The haematoxylin-eosin stain (× 40), shows the sulfur granule (asterisk) is rimmed by neutrophils. The granule is composed of filamentous bacteria embedded in an amorphous matrix. c GMS stain (× 20) shows individual bacterial filaments (arrows)

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