case_images: PMC10014783_01
case_images: MRI of the right knee [proton density-weighted (A) and T2-weighted (B, C)]. (A) Edema of the anterior cruciate ligament (arrow). (B) Soft tissue around the lower segment of the femur was swollen (arrow). Arrowheads from left to right show abnormal signals in the patella, epiphysis of the femur, and epiphysis of the tibia successively, which may have been caused by infectious disease. (C) Massive effusion is observed in the suprapatellar capsule (left arrow) and joint cavity (right arrow).
case_images: fmed-10-1135178-g0001.jpg
case_images: PMC10014783_01_fmed-10-1135178-g0001.jpg
case_images: F1
case_images: MRI (Figure 1) and ultrasound (Figure 2A) tests were then performed to evaluate the condition of the right knee.
case_images: (A) Ultrasound of the right knee. An anechoic zone with an anteroposterior diameter of 8.6 mm is seen in the suprapatellar capsule of the joint suggesting effusion in the suprapatellar bursa. (B) X-ray of the right knee in a half-year follow-up of the patient after discharge. No obvious abnormality is found.
case_images: fmed-10-1135178-g0002.jpg
case_images: PMC10014783_01_fmed-10-1135178-g0002.jpg
case_images: F2
case_images: MRI (Figure 1) and ultrasound (Figure 2A) tests were then performed to evaluate the condition of the right knee. In the half-year follow-up of the patient, the range of motion of the right knee had returned to normal, and no obvious abnormality was found in the repeated X-ray examination (Figure 2B).
case_images: A timeline with relevant data from the patient's episode of care. WBC, white blood cell; CRP, C-reactive protein; ALT, alanine aminotransferase; AST, aspartate aminotransferase; IVIG, intravenous immunoglobulin; ESR, erythrocyte sedimentation rate; EBV, Epstein-Barr virus; mNGS, metagenomics next-generation sequencing.
case_images: fmed-10-1135178-g0003.jpg
case_images: PMC10014783_01_fmed-10-1135178-g0003.jpg
case_images: F3
case_images: A timeline, with relevant data from the patient's episode of care, is shown in Figure 3.