| paranasal | Alongside the nose. (05 Mar 2000) |
|---|---|
| paranasal sinus diseases | Diseases affecting or involving the paranasal sinuses and generally manifesting as inflammation, abscesses, cysts, or tumours. (12 Dec 1998) |
| paranasal sinuses | Air-filled extensions of the respiratory part of the nasal cavity into the frontal, ethmoid, sphenoid, and maxillary cranial bones. They vary in size and form in different individuals and are lined by the ciliated mucous membranes of the nasal cavity. (12 Dec 1998) |
| paranasal sinus neoplasms | Neoplasms or tumours of the paranasal sinuses. Malignant neoplasms are rare, comprising 3% of all head and neck neoplasms. The majority arise in the maxillary sinus with malignancies of the ethmoid sinus constituting virtually all the remaining tumours. (12 Dec 1998) |
| syndromes of paranasal sinuses | <radiology> Gardner: osteomas, Kartagener: chronic infection, basal cell-nevoid, neurofibromatosis, Down (trisomy 21): hypoplastic frontal, sphenoid, with or without ethmoid, progeria: absent frontal sinuses; dwarf, immature, cleidocranial dysostosis: all sinuses absent/small (12 Dec 1998) |
| maxillary sinusitis | Inflammation of the maxillary sinus. In most cases it is the result of infection by the bacteria haemophilus influenzae, streptococcus pneumoniae, and staphylococcus aureus. This condition may be acute or chronic. (12 Dec 1998) |
| sinusitis | <pathology> Inflammation of a sinus. The condition may be purulent or nonpurulent, acute or chronic. Depending on the site of involvement it is known as ethmoid, frontal, maxillary or sphenoid sinusitis. (18 Nov 1997) |
| sphenoid sinusitis | Inflammation of the sphenoid sinus. This condition usually is accompanied by pansinusitis and may present itself in an acute or chronic form. (12 Dec 1998) |
| infectious sinusitis of turkeys | See: chronic respiratory disease. (05 Mar 2000) |
| ethmoid sinusitis | Inflammation of the ethmoid sinus. It may present itself as an acute (associated with viral rhinitis) or chronic (associated with allergic or hyperplastic sinusitis) condition. (12 Dec 1998) |
| frontal sinusitis | Inflammation of the frontal sinus; in most cases the infection is caused by the bacteria streptococcus pneumoniae and haemophilus influenzae. This condition may be acute or chronic. (12 Dec 1998) |