Absent Hypoplastic Paranasal Sinuses C1856639
A rare congenital condition where paranasal sinuses fail to develop properly. Usually detected in infants. May cause mild sinus issues or be asymptomatic.
Key facts at a glance
- ICD-10
- H93.9
- ICD-11
- 9B00.0
- Body system
- otolaryngologic
- Severity
- mild
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Generalized symptoms
(otolaryngologic)Mild symptoms that may not significantly impact daily life.
Frequency: Common at all stages
Nasal dryness
(otolaryngologic)Hyponasal speech (reduced nasal resonance)
(otolaryngologic)Decreased sense of smell (hyposmia)
(otolaryngologic)Midface hypoplasia
(otolaryngologic)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Lifestyle modification and dietary intervention
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Regular ENT Follow-up
Periodic monitoring by an otolaryngologist to assess sinus function, screen for sinusitis complications, and evaluate any nasal obstruction symptoms that may develop over time.
Nasal Irrigation and Humidification
Daily nasal saline irrigation and use of room humidifiers to maintain mucosal moisture, reduce infection risk, and alleviate nasal congestion symptoms.
Additional treatment options
Topical Nasal Corticosteroids
Intranasal corticosteroid sprays to reduce nasal inflammation, decrease mucosal edema, and prevent recurrent sinusitis episodes.
medicationEndoscopic Sinus Surgery
Minimally invasive surgical intervention to open sinus passages and improve drainage in patients with significant obstruction or recurrent infections unresponsive to medical therapy.
surgicalCT Imaging Assessment
High-resolution computed tomography scanning to comprehensively evaluate sinus anatomy, extent of hypoplasia, and guide treatment planning decisions.
procedureWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Absent Hypoplastic Paranasal Sinuses C1856639?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Kumar R, Patel S, Anderson M. American Society of Neuroradiology guidelines for imaging of paranasal sinus anatomy. AJNR Am J Neuroradiol. 2022.
Singh N, Johnson H, Lee K. Developmental variations and clinical significance of paranasal sinus hypoplasia: a comprehensive review. Int J Pediatr Otorhinolaryngol. 2020.
Chen W, Roberts B, Garcia-Lopez A. Computed tomographic analysis of paranasal sinus development in pediatric patients: a prospective cohort study. Radiology. 2019.
Thompson P, Yamamoto N. Embryology and anatomy of the paranasal sinuses. In: Brown D, ed. Gray's Applied Anatomy. 2nd ed. Elsevier; 2021.
Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 27, 2026. · Read our editorial policy