case_images: PMC11773147_01
case_images: CT shows unilateral renal agenesis (yellow arrow) in this patient, which has been documented as a rare occurrence associated with KFS.
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case_images: His medical history included alcoholic liver cirrhosis, managed with TIPS, and congenital absence of the left kidney (Fig. 1).
case_images: Frontal chest radiograph demonstrates a left omovertebral bone (green arrow) with scapular pseudo-articulation and left scapular elevation (blue arrow). There is suggestion of a right neck mass (pink arrowhead).
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case_images: Chest radiography and the neck CT also provided imaging of bony structures and revealed signs of a Sprengel deformity, including an elevated left scapula and the presence of a left omovertebral bone (Fig. 2, Fig. 3).
case_images: Sagittal CT shows fusion of C5 and C6 vertebrae, including the vertebral bodies (white arrow) and posterior elements. There is narrowing of the anteroposterior dimension of the C5 and C6 vertebral bodies. These findings are consistent with Klippel-Feil syndrome. No spinal hardware is seen to indicate prior surgery.
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case_images: Additionally, the CT findings included the fusion of the C5 and C6 vertebrae, indicative of Klippel-Feil syndrome (Fig. 4).
case_images: Whole body F-18 FDG PET shows a large area of intense uptake in the right neck (pink arrowhead). There is mild uptake in the region of the gallbladder fossa in this patient with chronic liver disease (brown arrow). Physiologic excretion of radiotracer is seen in the urinary bladder (yellow arrow).
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case_images: Mild FDG uptake was also noted in the region of the gallbladder fossa, which correlated with the patient's known liver disease/TIPS and gallbladder wall thickening (Fig. 5).
case_images: A, B. Head and neck MRI time of flight image and MRA coronal MIP reconstruction show an absent/hypoplastic left vertebral artery (red asterisk) with a normal contralateral right vertebral artery (red arrow).
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case_images: MRI and MRA of the head and neck demonstrated an absent or markedly diminutive left vertebral artery (Fig. 6).