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Antrochoanal polyps in children: CT findings and differential diagnosis
X Pruna1, J M Ibañez, X Serres
1Department of Radiology, Hospital General de Granollers, Barcelona, Spain.
Insights
Antrochoanal polyps, also known as Killian polyps, are rare growths. This study highlights their varied CT appearances in pediatric cases, often extending through the accessory ostium.
Area of Science:
- Otolaryngology
- Pediatric Radiology
- Head and Neck Pathology
Background:
- Antrochoanal polyps (Killian polyps) are benign, slow-growing lesions originating in the maxillary antrum and extending to the choana.
- These polyps exhibit a male predominance and are typically diagnosed in adults aged 30-50 years.
Observation:
- This report details three pediatric cases of antrochoanal polyps.
- The study focuses on the distinct computed tomography (CT) characteristics observed in these young patients.
- A key observation was the consistent pathway of choanal extension via the accessory ostium in all cases.
Findings:
- The CT scans revealed diverse appearances of antrochoanal polyps in the pediatric cohort.
- Differential diagnoses and potential complications associated with these polyps were analyzed.
- The accessory ostium was identified as the primary route for choanal extension in all presented pediatric cases.
Implications:
- Understanding the varied CT features of antrochoanal polyps is crucial for accurate diagnosis in children.
- Recognizing the common pathway through the accessory ostium aids in surgical planning and management.
- This pediatric series expands the understanding of antrochoanal polyp presentation and behavior in younger populations.
Abstract:
Antrochoanal polyp (Killian polyp) is an infrequent, usually solitary, benign, slowly growing lesion that arises from the maxillary antrum and reaches the choana. These polyps have a discrete male predominance and are diagnosed usually between the third and the fifth decades of life. This report is based on three cases of antrochoanal polyp, occurring in the pediatric group, and the objective is to demonstrate their different CT characteristics, principal differential diagnoses, and potential complications. We emphasize that in all three cases of our series the growth of the polyp to the choana is through the accessory ostium.