23. Nonodontogenic cysts of the jaws. Classification, etiology, pathogenesis, clinical features, diagnosis, differential diagnosis and treatment. C Flashcards
1
Q
A
2
Q
Types of non-odontogenic cysts
A
- Globulomaxillary cyst
- Median mandibular cyst
- Nasopalatine cysts
- Stafne/static bone cyst
- Aneurysmal bone cyst
- Solitary bone cyst
3
Q
Glubulomaxillary cyst
A
- Between upper lateral and canine
- Apical cysts related to non vital lateral incisors or other cyst lesions
- Treatment→Enucleation
4
Q
Median mandibular cyst
A
- Midline of jaw
- Odontogenic origin
5
Q
Nasopalatine cyst
A
- Epithelial remnants of embryonic nasopalatine ducts origin→Occur during incisive canal formation→fusion of premaxilla w/ palatine process of maxillary bones
- Symmetrical swelling behind upper incisors in midline
- Aetiology→infection/trauma
6
Q
Nasopalatine cyst radiographically
A
- Round or oval radiolucent lesion→may displace roots of central incisors laterally
- Difficult to differentiate cyst from large canal→canal <6mm on radiograph normal if no symtoms/abnormal findings
7
Q
Nasopalatine cyst treatment
A
-Enucleation
8
Q
Stafnel/static bone cyst
A
- Smooth outlined lesion beneath second and third molar teeth and below inferior dental canal
- Asymptomatic and not true cyst→Invagination of medial aspect of mandible containing salivary tissue
9
Q
Stafnel/static bone cyst management
A
Radiography w/ CT scan or MRI to determine bone anatomy and soft tissue
10
Q
Aneurysmal bone cyst
A
- Non epithelial lined
- More common in mandible
- Unknow aetiology→vascular malformation arising from prior unrelated lesion
Painful swelling 50% of time
11
Q
Aneurysmal bone cyst radiographically
A
Uni or multilocular→ irregular outline and occasional displacement of roots
12
Q
Aneurysmal bone cyst treatment
A
- Curettage
- Cryotherapy and resection for large and recurrent lesions
13
Q
Solitary bone cysts
A
- Non epithelial lined space→Contain straw coloured fluid or none
- In long bones-rarely jaws
- Unknown aetiology but trauma suggested
