bone cyst


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Related to bone cyst: Bone tumor, aneurysmal bone cyst, unicameral bone cyst

sol·i·tar·y bone cyst

a unilocular cyst containing serous fluid and lined with a thin layer of connective tissue, occurring usually in the shaft of a long bone in a child.

bone cyst

Etymology: AS, ban + Gk, kytis, cyst
1 a dilation in the wall of a blood vessel in a bone, usually eccentrically placed.
2 a sac in bone tissue in the parathyroid disorder osteitis fibrosa.

simple bone cyst

A unilocular cyst-like space lined by connective tissues and filled with serous fluid.
It is not a true cyst as it lacks an epithelial lining.

bone cyst

A local thinning and expansion of bone with a fluid-filled centre. Solitary bone cysts sometimes occur during the growth period. They may also be caused by tumours, especially the benign OSTEOCLASTOMAS. Bone cysts are usually unsuspected until the bone suddenly breaks on the application of a minor force.

aneurysmal bone cyst

painful, expansile, benign bone tumour affecting metaphyses in young people (aged 5-30 years)

sol·i·tar·y bone cyst

(sol'i-tar-ē bōn sist)
Unilocular cyst containing serous fluid and lined with a thin layer of connective tissue, occurring usually in the shaft of a long bone in a child.
Synonym(s): simple bone cyst.

bone

1. the hard, rigid form of connective tissue constituting most of the skeleton of most vertebrates, composed chiefly of an organic component of collagenous matrix and cells and a mineral component of calcium phosphate and other salts.
2. any distinct piece of the skeleton of the body. For a named list of bones see Table 10.
3. describes conformation, substance, thickness and quality of bone structure in an animal, e.g. an animal with good bone. See also osseous.

bone ash
analysis of the degree of mineralization of bone is done by an ash analysis in which the bone is heated at 600°C until there is no further weight loss.
bone atrophy
brittle b's
see osteogenesis imperfecta.
bone callus
see callus (2).
cancellated bone, cancellous bone
bone composed of thin intersecting lamellae, usually found internal to compact bone. Called also spongy bone.
cartilage bone
bone developing within cartilage, ossification taking place within a cartilage model. Called also endochondral ossification.
cheek bone
see zygomatic bone.
chevron bone
see hemal arch.
chondroid bone
has histological characteristics of both cartilage and bone; may develop in response to tensions from frequently changing directions.
bone clamp
strongly built, handheld, tong-like instrument with outcurving blades making a circle when closed for grasping a piece of bone shaft. The handles are ratcheted to give a firm grasp, and the faces of the blades have deep, crossways grooves.
compact bone
bone substance that is dense and noncancellous.
cortical bone
the compact bone of the shaft of a bone that surrounds the marrow cavity.
bone cyst
a discrete, grossly visible cavity, filled with fluid and often lined by a membrane. It may be located under cartilage (subchondral), be a single cavity (unicameral), filled with blood (aneurysmal) or contain epidermal cells (epidermoid).
Enlarge picture
Aneurysmal bone cyst. By permission from Slatter D, Textbook of Small Animal Surgery, Saunders, 2002
decalcified bone
a material for bone grafting. Prepared by treatment with hydrochloric acid, bone morphogenic protein is retained.
bone density
the degree of mineralization, usually demonstrable in radiographs.
bone discoloration
continuous intake of tetracycline colors bone of growing animals yellow; inherited or acquired porphyria discolors bone red-brown.
ectopic bone
bone which develops in abnormal sites. Needs to be differentiated from ectopic ossification and ectopic mineralization.
endochondral bone
bone formed by the ossification of cartilage. The means of lengthening of long bones. See also enchondral ossification.
entoglossal bone
the bone in a bird's tongue.
bone file, bone rasp
see bone rasp.
flat bone
one whose thickness is slight, sometimes consisting of only a thin layer of compact bone, or of two layers with intervening cancellated bone and marrow; usually curved rather than flat.
bone flour
finely ground bone used as a mineral supplement in animal feed to supply additional calcium and phosphorus. Needs to be properly sterilized.
bone fragility
the ease with which bone fractures depends to a large extent on the density of its compact bone, that is its degree of mineralization, which in turn depends on a number of factors including age, nutritional adequacy, state of pregnancy and lactation and exposure to weight bearing.
bone G1a protein
intramembranous bone
bone formed within membrane or under the periosteum.
jugal bone
see zygomatic bone.
lamellar bone
mature bone in which the collagen fibers are in an orderly layered arrangement producing lamellae.
laminar bone
the formation of bone by the periosteum in layers, sometimes more than one layer at a time, to supplement the diaphyseal expansion of the bone. Is marked in farm animals and large dogs, and serves to accommodate the skeleton to the very rapid growth of the musculature.
lingual bone
see hyoid bone.
long bone
one whose length usually exceeds its breadth and thickness and which usually bears epiphyses at each extremity during growth.
Enlarge picture
Structure of typical long bone. By permission from Aspinall V, O'Reilly M, Introduction to Veterinary Anatomy and Physiology, Butterworth Heinemann, 2004
malar bone
see zygomatic bone.
marble b's
mastoid bone
the posterior part of the petrous temporal bone; the mastoid process.
bone matrix
the intercellular component of bone. It includes collagen and amorphous ground substance consisting mostly of mucopolysaccharides (chondroitin sulfate).
bone meal
a product made from meatless bones which are crushed and sterilized. The bones are derived from boning plants and retail outlets. The bonemeal is used as stock feed, fertilizer and in a number of industries. Care is needed in its preparation and in the selection of the bones because of the high risk of transmitting diseases including anthrax, salmonellosis, tuberculosis. A coarse grade of bone flour (see above). Prohibited from being used as a feed in many countries as part of programs to control or prevent bovine spongiform encephalopathy.
membrane bone
bone that develops within a connective tissue membrane.
metaplastic bone
bone formed by connective tissue by redifferentiation of mesenchymal cells.
bone mineral
principally calcium and phosphorus but includes also magnesium and, to a lesser extent, potassium and fluorine. Consisting mainly of hydrated calcium phosphate (apatite) and calcium carbonate.
bone modeling
the sum of the activities of the endosteum and periosteum of bone to produce bone forms.
bone neoplasm
includes fibroma, fibrosarcoma, chondroma, osteochondroma, chondrosarcoma, osteoma, osteosarcoma.
pelvic bone
hip bone.
perilacunar bone
low density bone around the lacunae of bone which contains much amorphous mineral. In this form the mineral is labile and therefore important in the maintenance of calcium homeostasis.
periosteal bone
bone deposition by the periosteum in successive laminae; the bone formation in new bone and in a callus, beginning as fibrocellular tissue forming from the endosteum and periosteum, followed by calcification and bone formation.
bone pinning
see pinning.
pneumatic bone
bone that contains air-filled spaces.
premaxillary bone
pterygoid bone
a small skull bone that articulates with the sphenoid.
bone remodeling unit
osteoclasts, osteoblasts and their progenitors, the basal metabolic unit of bone.
bone sand
remnants of bone trabeculae destroyed in osteomyelitis and sequestered in pus.
bone sealant
a composition of beeswax and isopropylpalmitate used to seal the cut end of bone and stop the oozing of blood.
shin bone
short bone
one of approximately equal length, width and thickness, usually without epiphyses.
solid bone
compact bone.
spongy bone
cancellous bone.
bone structural unit
see basic multicell unit.
sutural b's
variable and irregularly shaped bones in the sutures between the bones of the skull.
bone tumor
includes cartilage-forming tumors (chondroma, osteochondroma, chondrosarcoma, multilobular tumor) and bone-forming tumors (osteoma, osteosarcoma).
tympanic bone
the part of the temporal bone surrounding the middle ear.
bone wax
see bone sealant (above).
wormian b's
sutural bones.
woven bone
primitive bone with coarse collagen bundles arranged in a disorderly fashion and replaced subsequently by lamellar bone.
References in periodicals archive ?
This modality can better delineate the size of a nidus in osteoid osteoma or osteoblastoma, cortical thinning in an aneurysmal bone cyst, or to look for lung metastasis.
Cementum-like bone production in solitary bone cysts (so-called "cementoma" of long bones): report of three cases--electron microscopic observations supporting a synovial origin to the simple bone cyst.
Key words: aneurysmal bone cyst, avian, Columbiformes, African collared dove, Streptopelia roseogrisea
FINAL DIAGNOSIS: Aneurysmal bone cyst of the trachea.
The "fallen leaf" sign on plain films is virtually pathognomonic of a multiloculated bone cyst (25) (Fig.
Her proud mother Jeanette said: ``Gina broke her leg last year while playing rounders and the surgeons discovered she had a bone cyst.
If periostitis is present, fibrous dysplasia, solitary bone cyst, nonossifying fibromas, and enchondromas can be removed from consideration unless complicated by fracture.
15) CT scanning and MRI (Figure 1, B) are helpful in assessing the extent of the lesion and in distinguishing it from aneurysmal bone cyst (ABC), which is discussed further below.
The pathologic examinations of the surgically obtained specimens were all in favor of GCT except one that was interpreted as an aneurysmal bone cyst because of the presence of vascular spaces and osteoclastic granuloma.
SBCs are also known as "traumatic bone cysts", "simple bone cysts", "haemorrhagic bone cysts", "extravasation cysts", unicameral bone cyst and progressive bone cavity [Donkor and Punnia-Moorthy, 1994; Xanthinaki et al, 2006].
Differential diagnosis includes expansile lytic lesions of bone, such as aneurysmal bone cyst, simple bone cyst, enchondroma and fibrous dysplasia, as well as giant cell tumour if the lesion is situated in the epiphysis.
Vigler and associates looked at seven children that were treated surgically due to a pathologic fracture through a simple bone cyst in the subtrochanteric region of the proximal femur.