Radiographic examination of the facial, nasal and paranasal sinus regions of the XXXX . II. Radiological findings.

@entity1244 @entity1641 @entity174 @entity1048 @entity4 @entity532 @entity2490 @entity281 @entity130 @entity7291
The radiographic findings in 167 @entity1641 subjected to radiography of the facial area, nasal cavity and paranasal sinuses are recorded. Cases were grouped according to clinical diagnosis and the common and disparate radiographic features between and within groups are discussed. @entity7291 occurred most frequently and accounted for about 30 per cent of cases, most of which had periapical @entity281 . This disorder presented as two distinct clinical entities in almost equal numbers affected teeth with roots rostral to the maxillary sinus usually produced @entity4 , whereas those with roots within the sinus were generally associated with nasal discharge as a result of secondary @entity1244 . In the former group periapical changes could readily be identified on radiographs, but in the latter group affected teeth could be recognised with confidence in only about half the cases. Primary @entity1244 was the commonest specific condition recorded and accounted for 32 cases, three of which were mycotic. Using lateral erect projections, comparison of the radiographic features of primary @entity1244 and @entity1244 secondary to @entity7291 showed some useful differentiating signs. In four ponies, @entity2490 associated with @entity1244 led to disruption of the intra-nasal structures but mycotic @entity2490 , nasal ulceration and an intra-nasal foreign body produced no radiographic abnormalities. Sixteen cases of suture @entity1048 were recorded, with varying degrees of new bone formation, and of 13 animals presented for evaluation of @entity130 , pre-diagnosed @entity174 were @entity532 due to @entity1244 in three.(ABSTRACT TRUNCATED AT 250 WORDS)
