Its all about development of nose and most common congenital anomalies regarding the development of nose

1. R. Hubert Cyril Lourdes
3rd M.B.B.S.,
MADHA MEDICAL COLLEGE & RESEARCH INSTITUTE

2. DEVELOPMENT
OF
NOSE

3. Five facial prominences
1. FRONTONASAL prominence
2. MAXILLARY prominence
3. MEDIAL NASAL prominence
4. LATERAL NASAL prominence
5. MANDIBULAR prominence

6.  Appearance of NASAL PLACODES at the end of 4th
week of IUL
 Appears lateral to the FRONTONASAL prominence
as a LOCAL THICKENING of SURFACE ECTODERM.
 NASAL PITS are formed on 5th week of IUL, by
invagination of NASAL PLACODES.
 NASAL PROMINENCE are formed following the
formation of NASAL PITS
NASAL PROMINENCE divided into 2 subdivisions:
1. LATERAL nasal prominence
2. MEDIAL nasal prominence

7. Following 2 weeks after 5th week of IUL, maxillary
prominence continue to INCREASE IN SIZE.
Simultaneously, they grow medially, compressing
the medial nasal prominence towards the midline.
In the formation of upper lip LATERAL NASAL
PROMINENCE is not involved
The deep furrow which separates maxillary
prominence and later nasal prominence is called as
NASOLACRIMAL GROOVE.
Nasolacrimal groove forms NASOLACRIMAL DUCT
and its upper wider end forms the LACRIMAL SAC.

8. Development of lateral wall
of nose
 During 8th week of IUL 6 to 7 ridges appear
on the lateral nasal wall, those ridges are
called as ETHAMO TURBINALS.

9.  1st ETHAMO TURBINAL
1. ASCENDING portion forms AGGER NASI
2. DESCENDING portion forms UNCINATE
PROCESS
 2nd ETHAMO TURBINAL forms MIDDLE
TURBINATE.
 3rd ETHAMO TURBINAL forms SUPERIOR
TURBINATE
 4th and 5th ETHAMO TURBINAL forms
SUPREME TURBINATE
 MAXILLO TURBINAL forms INFERIOR
TURBINATE

10.  FURROWS between each ETHAMO TURBINALS
forms respective NASAL MEATUSES
 1st FURROW :- MIDDLE MEATUS (b/w 1st &
2nd ET)
 2nd FURROW :- SUPERIOR MEATUS
 3rd FURROW :- SUPREME MEATUS
 4th FURROW :- INFERIOR MEATUS

12. DEVELOPMENTAL ANOMALIES
OF
NOSE

13.  PROBOSIS DEFORMITY
 ARHINIA (Nasal aplasia)
 POLYRHINIA (Double nose)
 CHOANAL ATRESIA
 NASAL DERMOID CYST
 NASAL GLIOMAS
 NASAL HEMANGIOMA (vascular
hamartoma)

14.  NASAL MASS
1. CYSTIC MASS
• MENINGOCOELE
• MENINGOENCEPHALOCOEL
2. SOLID MASS
 GLIOMA
 CRANIOPHARYNGIOMA
 CLEFT LIP and PALATE
1. MEDIAN NASAL CLEFT
2. MEDIAL NASAL CLEFT
3. LATERAL NASAL CLEFT

17. ARHINIA

25. Development
of
paranasal air sinuses

26. Paranasal sinuses develop as OUTPOUCHING from
mucous membrane of lateral wall of nose.
Maxillary sinus and Ethmoidal sinuses are present
at birth
Growth of sinuses continues during childhood and
early adult life
Radiologically various sinuses can be identified at
various milestones of growth. They are:
I. Maxillary sinus – 4th to 5th month
II. Ethmoidal sinus – 1 year
III. Sphenoidal sinus – 4 years
IV. Frontal sinus – 6 years.

27. DEVELOPMENTAL ANOMALIES
OF
paranasal air sinuses

28. Unilateral maxillary air sinus aplasia
Total paranasal sinus aplasia

29. Unilateral
maxillary sinus
aplasia

30. Unilateral maxillary
sinus aplasia

31. Total aplasia of
paranasal sinuses

32. Total aplasia of
paranasal sinuses