TPO and spindle cell hemangioma: SCH+ participants demonstrated significantly higher levels of TSH (7.6 ± 2.1 mIU/L), hsCRP (4.2 ± 1.6 mg/L), and anti-TPO antibodies (116.5 ± 34.8 IU/mL) compared to SCH- and controls (P < 0.001).