Nasopharyngeal angiofibroma

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Nasopharyngeal angiofibroma
File:Nasopharyngeal angiofibroma - 2 - high mag.jpg
Micrograph of a nasopharyngeal angiofibroma H&E stain.
Classification and external resources
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DiseasesDB 32229
MedlinePlus 001572
eMedicine ent/470
Patient UK Nasopharyngeal angiofibroma
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Nasopharyngeal angiofibroma (also called juvenile nasopharyngeal angiofibroma)[1][2] is a histologically benign but locally aggressive vascular tumor that grows in the back of the nasal cavity. It most commonly affects adolescent males.[3] Patients with nasopharyngeal angiofibroma usually present with one-sided nasal obstruction and recurrent bleeding.

Signs and symptoms

  • Frequent chronic epistaxis or blood-tinged nasal discharge
  • Nasal obstruction and rhinorrhea
  • facial dysmorphism (when locally invasive)
  • Conductive hearing loss from eustachian-tube obstruction
  • Diplopia, which occurs secondary to erosion into superior orbital fissure and due to third and sixth nerve palsy,
  • proptosis when having intraorbital extension.
  • Rarely anosmia, recurrent otitis media, and eye pain.

Diagnosis

If nasopharyngeal angiofibroma is suspected based on physical examination (a smooth vascular submucosal mass in the posterior nasal cavity of an adolescent male), imaging studies such as CT or MRI should be performed. Biopsy should be avoided as to avoid extensive bleeding since the tumor is composed of blood vessels without a muscular coat.

Antral sign or Holman-Miller sign (forward bowing of posterior wall of maxilla) is pathognomic of angiofibroma.

Differential diagnosis

Treatment

Treatment for Nasopharyngeal angiofibroma (JNA) is primarily surgical. The tumor is primarily excised by external or endoscopic approach. Medical treatment and radiation therapy are only of historical interest.

External approaches:

  • transpalatine approach
  • transpalatine + sublabial (Sardana's) Approach
  • infratemporal Approach
  • nasal endoscopic Approach
  • transmaxillary Approach

Endoscopic approach is an excellent tool in primary and recurrent JNA, it allows visualisation and precise removal of the lesion. Preoperative embolisation of tumour may be of some use in reducing intraoperative bleeding.

Direct visualization is not common.

Prognosis

Prognosis for nasopharyngeal angiofibroma is favorable. Because these tumors are benign, metastasis to distal sites does not occur. However, these tumors are highly vascularized and grow rapidly. Removal is important in preventing nasal obstruction and recurrent epistaxis. Mortality is not associated with nasopharyngeal angiofibroma.[4]

References

  1. 00021 at CHORUS
  2. "juvenile nasopharyngeal angiofibroma" at Dorland's Medical Dictionary
  3. Lua error in package.lua at line 80: module 'strict' not found.
  4. Textbook of Family Medicine, 8th Edition. Chapter 19 p.329. Rakel, MD. ISBN 978-1-4377-1160-8

External links