Multilocular Lucent Lesions
Terms in this set (77)
this is the most common multilocular radiolucency
- botryoid odontogenic cyst
- odontogenic myxoma
other odontogenic multilocular lucencies
- giant cell lesions (CGCG, brown tumors of HPT)
- central hemangioma
these are multilocular lucencies of non-odontogenic origin
this multilocular odontogenic lucency occurs in young age, most frequently non-expansile and asymptomatic
OKC (scalloped borders)
lining keratinized epithelium w/ corrugated parakeratin
what is the pathology of an OKC?
botryoid odontogenic cyst (polycystic periodontal cyst)
this multilocular odontogenic lucency is typically in the same location as LPC, expansile, otherwise asymptomatic
botryoid odontogenic cyst
botryoid odontogenic cyst
what is the frequency of conventional ameloblastoma?
what is the average age of patients presenting with ameloblastoma?
mostly asymptomatic and slowly growing
what symptoms are associated with ameloblastoma?
what is the predilection of ameloblastoma?
mandible (molar/ramus area)
>75% of amleoblastoma cases occur in this area
how do the majority of ameloblastomas appear radiographically?
are there any ameloblastoma cases that appear unilocular radiographically?
what is the pathology of ameloblastoma?
resection followed by reconstruction
what is the treatment for ameloblastoma?
- maxillary sinus
- nasal space
- base of skull/brain
a maxillary ameloblastoma has a tendency to infiltrate into these areas
surgical excision w/ generous margins
how are ameloblastomas treated?
how far beyond the radiographic margins of the lesion should the excision go?
depends on extent of the lesion
when should an en bloc vs. resection be done in cases of ameloblastomas?
reconstruction plate and autologous bone graft
what is done after en bloc or resection in ameloblastoma treatment?
what is the recurrence rate of ameloblastomas treated with conservative excision or curettage?
yes but rare
are there any reports of malignant transformation in cases of ameloblastoma?
this is a locally aggressive lesion of the jaw, derived from odontogenic mesenchymal tissue
abundant "mucoid" ground substance
odontogenic myxomas are characterized by _______________________ which helps its invasive nature
what is the predilection for odontogenic myxomas?
odontogenic myxomas are commonly found in this area
slowly growing and expansile, otherwise asymptomatic
what are the characteristics of odontogenic myxomas?
multilocular (soap bubble/honeycomb) w/ teeth displacement
how do odontogenic myxomas appear radiographically?
central giant cell granuloma
this is a non-neoplastic but locally destructive giant cell lesion, unique to the jaws (bone perforation and teeth resorption)
CGCGs are most frequently seen in this group of people
anterior region of the jaws
which area of the jaws do CGCGs have a predilection for?
pain and swelling
this is common in cases of CGCGs
uni- or multilocular lucency
how do CGCGs appear radiographically?
giant cell lesion
how do CGCGs appear microscopically?
brown tumors of HPT
if a CGCG is suspected, what should your differential diagnosis include?
of the jaw bones, which one is more affected by CGCGs?
CGCG treated endodontically (misdiagnosis)
- in some cases may need block resection
- intralesional steroid injection
how are CGCGs treated?
what is the recurrence rate in children with CGCG treated by curettage?
this is an autosomal dominant fibro-osseous condition of the jaws w/ bilateral swellings in young children
- self limiting, regresses in late teenage years
- cosmetic recon touring in some cases
what is the treatment for cherubism?
fibro-osseous lesion w/giant cells
how does cherubism appear microscopically?
when cherubism is suspected, what should your differential diagnosis include?
central hemangioma (AV malformation)
this is a benign intra-osseous vascular neoplasm (high pressure)
what age range do central hemangiomas present?
what is the predilection for central hemangiomas?
which jaw bone is most affected by central hemangiomas?
swelling w/ audible bruit on auscultation/palpation
what are the clinical symptoms of central hemangiomas?
in cases of central hemangiomas, a tooth may be compressible w/ ______________ oozing upon pressure
multilocular "soap bubble"/"honeycomb"
how do central hemangiomas appear radiographically?
do central hemangiomas appear as unilocular lesions?
these show central hemangioma lesions after injection of contrast
this may result from removal of tooth in cases of central hemangiomas
- aspiration (yields bright red arterial blood)
- excision after injection of thrombosing/sclerosing solutions
how are central hemangiomas treated?