How should adenoidal enlargement be measured? A radiological study based on interobserver agreement

Area of Science:

• Otolaryngology
• Pediatric Radiology
• Medical Imaging

Background:

• Clinical assessment of adenoid size is challenging, necessitating objective measurement methods.
• Radiological assessment offers a potential solution for quantifying adenoid hypertrophy.

Purpose of the Study:

• To determine the most effective radiological method for assessing adenoid size in children.
• To compare the reliability and correlation of different radiographic measurements with actual adenoid tissue volume.

Main Methods:

• Lateral cephalometric radiographs were obtained from 38 children prior to adenoidectomy.
• Two radiologists performed five distinct measurements on each radiograph.
• Correlations were calculated between radiological measurements and between measurements and operative adenoid volume.

Main Results:

• Linear measurement of the palatal airway demonstrated good inter-observer reliability and simplicity.
• Measurement of the nasopharyngeal soft tissue area showed comparable inter-observer reliability.
• Nasopharyngeal soft tissue area measurement exhibited a stronger correlation with the volume of adenoid tissue removed.

Conclusions:

• Linear palatal airway measurement is recommended for routine clinical assessment of adenoid size.
• Nasopharyngeal soft tissue area measurement is more suitable for longitudinal studies tracking changes in adenoid size.