Changes

**Extensive fibrosis of the lamina propria

**Extensive fibrosis of the lamina propria

**Atrophy of nasal glands

**Atrophy of nasal glands

**Squamous cell [[General Pathology - Disorders of Cell Growth#Metaplasia|metaplasia]]

**Squamous cell [[Disorders of Cell Growth - Pathology#Metaplasia|metaplasia]]

*-> Impaired local defences

*-> Impaired local defences

*Superficial fibrinous membrane can be peeled of without leaving dmaged tissue underneath

*Superficial fibrinous membrane can be peeled of without leaving dmaged tissue underneath