11.04-11.11 Radiographic patterns of disease Flashcards
(42 cards)
What two conditions cause the “hair on End” reaction of the periosteum?
- Sickle cell anemia
- thalassemia
- the appearance has fine short striae that project upwards perpendicular to the surface of the skull
what unit of measurement should be used for recording lesions?
-mm
if you only see one lesion, what is the numerical distribution?
Solitary, focal,
-these lesions are usually small
a ____ lesion refers to multiple lesions which have spread throughout a significant portion of the jawbone.
diffuse lesion
lesions that are found in at least 3 quadrants of the jaws involving both the maxilla and the mandible
Generalized lesions
bilateral symmetry frequently indicates..
a variant of normal or an inherited condition
if you could draw a pencil line confidently around the edges of a lesion, you would describe the border as:
well-defined or distinct
not only do you know where the lesion starts and stops, but there is further a radiopaque (white) line around the outside of the lesion, representing reactive bone. This is usually seen with ____ and ____ ____, and represents a subset of the well-defined border pattern
- Well-corticated, hyperostotic
- cysts and benign tumors
punched out lesions and what conditions/diseases are associated with them?
very sharp boundary with no apparent reaction of the host bone to the presence of the lesion.
-commonly seen in multiple myeloma and Langerhan’s cell histiocytosis
Multiple Myeloma and Langerhan’s cell histiocytosis are often associated with what type of radiographic lesions?
“punch out borders”
the presence of a peripheral radiolucent rim around a radiopaque lesion indicates…
that the lesion has a soft tissue capsule and that it will likely shell out easily
if you could not use a pencil to draw a line around the lesion and there is a zone of transition, the border would be defined as…
Ill-defined, poorly marginated
the presence of ragged moth-eated borders indicates the presence of…
severe inflammatory disease or malignant neoplasia
-it can be the most aggressive, rapidly destructive pattern
if the lesion is radiolucent, a circular shape, what is it most likely? and what is the “pattern?”
- characteristic of fluid filled cysts
- these are also referred to as a hydraulic pattern
if the lesion undulates up and down along the roots of the teeth, what disorder is commonly associated with this and what type of lesion (RL or RO)?
only Radiolucent lesions
-commonly seen with simple bone cysts and odontogenic keratocysts (OKC)
if the epicenter of a lesion is superior to the IAN canal, and especially if it is coronal to a tooth, the lesion is likely ____ in origin
odontogenic, if it’s below it’s non-odontogenic
if a lesion arises in the IAN canal, it is comprised of ___, ____ or ______ ____ elements
neural, vascular or smooth muscle elements
lesions in the condyle may be ____ in nature
cartilaginous
central lesions arise in…
the cancellous bone of the jaw, with cortex on either side and alveolar bone superiorly
peripheral lesions arise at the …
alveolar creast. Saucerization with a wide zone of transitions between obviously normal and abnormal bone is a sign of carcinoma
localized enlargement of crestal bone is an ominous sign, which may be the only sign of …
an osteosarcoma or chondrosarcoma
periosteal lesions
arise in the periosteal compartment of bone,
when can periosteal lesions be visualized the earliest?
on occlusal radiographs
circumcoronal RL
can develop from REE (dentigerous cyst) or represent infiltration of the follicular space by another lesion (ie OKC)
