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Surgical Anatomy of Nasopharynx- Debashis Nanda

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Nasopharynx and its relations.

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Surgical Anatomy of Nasopharynx- Debashis Nanda

  1. 1. Surgical Anatomy of NASOPHARYNX Debashis Nanda 14BM0024 💣
  2. 2. PHARYNX  NASOPHARYNX  OROPHARYNX  HYPOPHARYNX
  3. 3. NASOPHARYNX It is the uppermost part of the pharynx. Lies behind the nasal cavities. Length=4cm=Width Extension Base of skull Soft Palate
  4. 4. 1. Transition headline Let’s start with the first set of slides
  5. 5. Lympharic Drainage • Lateral retropharyngeal lymphnodes a/k/a Nodes of Rouviere,are the first nodes in the lymphatic drainage of nasopharnx. • Upper deep cervical nodes through retropharyngeal & parapharyngeal LN. • Spinal accessory chain of nodes in the post. • Ipsilateral or contralateral.
  6. 6. Sinus of morgagni •Lies b/w the base of the skull and upper free border of superior constrictor. Following structures pass through this space. • Eustachian tube • Levator veli palatini muscle • Ascending palatine artery
  7. 7. Passavant’s Ridge ▪ Mucosoal ridge. ▪ Encircles the post. & ant. Wall of nasopharyngeal isthmus. ▪ Raised by palatopharyngeus muscle.  When soft palate contracts during deglutition or speech, it makes firm contact with passavant’s ridge and cuts off nasopharynx from oropharynx.
  8. 8. Nasopharyngeal Tonsil  Sub-epithelial collection of lymphoid tissue  At the junction of roof and poaterior wall of nasopharynx.  Increases in size upto the age of 6 years and then gradually atrophies Tubal tonsil  Collection of sub-epithelial lymphoid tissue situated at the tubal elevation.  Forms a part of the waldeyer’s ring.  When enlarged due to infection,it causes eustachian tube occlusion.
  9. 9. Nasopharyngeal Bursa  Epithelial lined median recess found within the adenoid mass.  Extends from pharyngeal mucosa to the periosteum of the basiocciput.  Represemts the attatchment of notochord to the pharyngeal endoderm during embryonic life.  When infected, it may be the cause of persistent post nasal discharge or crusting.  Sometimes an abscess can form in the bursa- Thornwaldt’s disease. Rathke’s Pouch Represented clinically by a dimple above the adenoids.
  10. 10. Surgical Approaches  Transpalatal  Sub-labial mid-facial degloving  Lateral rhinotomy  Trans-facial maxillary swing  Mandibular swing  Infratemporal  transnasal-maxillary
  11. 11. THANKS!Any questions? 😉
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Nasopharynx and its relations.

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