PMC10196759_01
Abdominal computed tomography scan showing a low-density area with thinning of the sigmoid colon wall (red arrow) and extraluminal air (yellow arrow).
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Abdominal computed tomography (CT) revealed a low-density area with thinning of the sigmoid colon wall and air outside the intestinal tract (Fig. 1).
Blood culture smear showing gram-positive rods (red arrow). Gram staining, 1000 x.
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Gram-positive rods were detected in one of two sets of anaerobic bottles of blood culture upon admission and after 88 h and 38 min (day 3) (Fig. 2).
(a) Non-hemolytic pinpoint colonies after 96 h on Brucella HK agar plate. (b) Smear of the colonies showing gram-variable coccobacillus (red arrow). Gram staining, 1000 x.
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After 96 h of anaerobic incubation at 35  C, non-hemolytic pinpoint colonies of gram-positive coccobacilli with variable staining were observed on the Brucella HK agar plates (Figs. 3a, 3b).