PMC9988939_01
Computed tomography changes in the patient's lungs. (A) Increased and disordered bronchovascular bundles in both lungs, blurred and poorly defined boundaries, multiple patchy high-density shadows, mainly in the lower lobe, and curved fluid density shadows in the bilateral thorax. (B) Increased texture of both lungs, patchy high-density shadows on the dorsal side of both lungs, multiple solid microscopic nodules in both lungs, and a small fluid density in the bilateral thorax. (C) Multiple micronodules are observed in both lungs, and a few fibrous foci are observed in the left lung.
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F1
The patient's arterial blood gas analysis revealed 70% methemoglobin, and computed tomography (CT) revealed bilateral pleural effusion and pneumonia (Figure 1).
The urine color after administering methylene blue.
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F2
The fixed indwelling catheter revealed blue-green urine (Figure 2).
Magnetic resonance imaging T2 phase of the patient's brain. (A) Small patches of the long T2 signal shadow in the right basal ganglia with hyperintensity in T2 fluid-attenuated inversion recovery (FLAIR) and a few patchy long T2 signals in the white matter of bilateral cerebral hemispheres with hyperintensity in T2 FLAIR. Acute lacunar infarction in the right basal ganglia might be large, and there were few ischemic degeneration foci in the white matter of the bilateral cerebral hemispheres. (B) Small patches of long T2 signal shadow were observed in the right basal ganglia, with slight hyperintensity in T2 FLAIR. A few patchy long T2 signals were observed in the white matter of the bilateral cerebral hemispheres, with hyperintensity in T2 FLAIR. A few ischemic degeneration foci in the white matter of bilateral cerebral hemispheres and ischemic infarction foci in the right basal ganglia were considered.
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F3
Magnetic resonance imaging (MRI) of the brain revealed a possible acute lacunar infarction in the right basal ganglia and a few ischemic degenerations in the white matter of both hemispheres (Figure 3).