Abstract
One needs constant anatomic confirmation to correctly navigate “the head and neck”; perhaps the idea that “anatomy is destiny” rings truest here. A differential diagnosis can vary according to the anatomic subsite. Tumor staging for sinonasal and nasopharyngeal malignancies differs. Get to know how to recognize the different histologies in the external nose and sinonasal tract.
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References
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Appendices
Self Study
-
1.
Contains nasal erectile tissue:
-
(a)
The nasal septal swell body
-
(b)
Olfactory cleft
-
(c)
Limen nasi
-
(d)
Crista galli
-
(a)
-
2.
Which statement is true:
-
(a)
There is a contralateral relationship between nasal cavity and lung aeration which is termed the pulmonary cycle.
-
(b)
Nasal septum and turbinate are histologically identical.
-
(c)
The loose, distensible nasal septal lamina propria is responsible for a predisposition for septal polyps.
-
(d)
Sinonasal seromucinous glands have fewer acini than minor salivary glands.
-
(a)
Answers
-
1.
Contains nasal erectile tissue:
-
(a)
The nasal septal swell body – CORRECT.
-
(b)
Olfactory cleft represents the narrow vertical aspect of superior nasal cavity
-
(c)
Limen nasi separates the nasal vestibule from the nasal cavity
-
(d)
Crista galli projects superiorly from cribriform plate and is the attachment point of the falx cerebri
-
(a)
-
2.
Which statement is true:
-
(a)
The relationship between nasal cavity and lung aeration is ipsilateral during the pulmonary cycle.
-
(b)
The turbinates contain thick-walled nasal erectile tissue and are is usually covered by respiratory mucosa. The nasal septum has less distensible lamina propria compared to the turbinate. The lower septum has a stratified squamous epithelial lining. The vascularity of the septum is less than that of the turbinates, which exception of the nasal septal swell body.
-
(c)
The nasal septal lamina propria is tethered to the perichondrium, and not predisposed to polyps.
-
(d)
Sinonasal seromucinous glands have fewer acini than minor salivary glands. – CORRECT.
-
(a)
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© 2016 Springer International Publishing Switzerland
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Brandwein, M.S. (2016). Sinonasal Tract – Anatomy and Histology. In: Textbook of Head and Neck Pathology. Springer, Cham. https://doi.org/10.1007/978-3-319-33323-6_1
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DOI: https://doi.org/10.1007/978-3-319-33323-6_1
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