cranial nerves and vessels

Achondroplasia is a genetic bone disorder in which a child's arms and legs are short in proportion to their body length. It is the most common type of dwarfism. Achondroplasia is inherited by an autosomal dominant gene that causes abnormal cartilage formation. This sagittal T1-weighted MRI image shows some of the abnormalities found in an achondroplasia skull. There is a large cranial top with a small skull base. There is a kink in the cerviomedullary area. The forehead is prominent with a depressed nasal bridge. The foramen magnum is narrowed and the suprasellar cistern is enlarged. Also to go with what we learned about this week the straight sinus is vertically oriented instead of the normal horizontal orientation.

sinusitis

Sinusitis is an inflammation of the sinuses and nasal passages. Sinusitis can be categorized as chronic or acute. Acute sinusitis usually lasts less than 8 weeks or occurs no more than 3 times per year. Medications are usually effective against acute sinusitis. Chronic sinusitis, however, lasts longer than 8 weeks or occurs more than 4 times per year. Sinusitis can be caused by allergens, viral infections, pollutants, and fungi. Computed tomography is the imaging modality of choice to view the sinuses. The main goals in treating a sinus infection or sinusitis involve reducing the swelling in the nasal passages and sinuses, getting rid of the infection, adaquate drainage from the sinuses, and maintaining open sinuses.