Table of Contents
What is bone rarefaction?
oxford. views 1,428,169 updated. rarefaction (rair-i-fak-shŏn) n. thinning of bony tissue sufficient to cause decreased density of bone to X-rays, as in osteoporosis.
What causes bone demineralisation?
Several risk factors have been associated with bone demineralization, such as increasing age, low body mass index (BMI), excessive alcohol consumption, smoking, corticosteroid treatment, and family history of osteoporosis or fracture [14, 15].
What is trabecular rarefaction?
A pseudocyst is a normal variant that looks like a lytic lesion but is actually a rarefaction of the normal trabecular pattern; the trabecular rarefaction is a low stress area of bone that becomes apparent when it is surrounded by more prominent higher stress areas.
What is rarefaction dentistry?
Abstract. Bone rarefactions arising from dental lesions are commonly thought to be sustained by the microbiol component or by the toxins spread out into the surrounding bone by the disintegrated pulp. In thise case endodontic therapy is the only one capable of obtaining a full recovery.
What is periosteal thickening?
A periosteal reaction is the formation of new bone in response to injury or other stimuli of the periosteum surrounding the bone. It is most often identified on X-ray films of the bones.
What diseases cause low bone density?
6 Medical Conditions Linked to Osteoporosis and Bone Loss
- Diabetes Mellitus and Osteoporosis. For reasons scientists still don’t fully understand, people with type 1 diabetes tend to have lower bone density.
- Lupus and Rheumatoid Arthritis.
- Hyperthyroidism.
- Celiac Disease.
- Asthma.
- Multiple Sclerosis.
What causes loss of bone density?
There are many causes of osteoporosis. Not only do bones lose density with age, medications used to treat breast cancer, arthritis, asthma, Crohn’s disease and Addison’s disease can also lower bone density. Some illnesses such as hyperthyroidism, hypopituaritism and eating disorders also cause bones to lose strength.
What cancers cause lytic bone lesions?
Lytic lesions — spots where bone tissue has been destroyed — can be seen in other cancers, including breast cancer, lung cancer and kidney cancer. They can also be seen with infections of bone and even in some benign conditions. Taking a biopsy of one of the lytic lesions may help with your diagnosis.
What causes osteolytic?
Osteolytic lesions form when the biological process of bone remodeling becomes imbalanced. 1 Normally during this process, old cells on the skeleton are broken down and replaced by new ones.
What is apical Rarefying osteitis?
Rarefying osteitis is a general term for a radiolucent lesion on a radiograph usually diagnosed as a periapical abscess or a periapical cyst.
Which type of periosteal reaction shows aggressiveness of tumor?
The spiculated pattern is an aggressive form of periosteal reaction that includes both hair- on-end and sunburst subtypes. Spicules of bone form perpendicular to the periosteal surface in the hair-on-end subtype (Figs. 4 and 5), which is highly suggestive of Ewing’s sarcoma.
What causes periosteal reaction?
The causes of periosteal reaction are broad, including trauma, infection, arthritis, tumors, and drug-induced and vascular entities. When periosteal reaction occurs in a bilateral distribution, a systemic disease process should be considered.
What is rarefaction of the bones?
Rarefaction is the term used to describe osteoporosis of the bones when seen by Radiography ( X-Ray) etc. This rarefaction occurs mainly due to migration of deposited calcium and phosphate from the bones to the blood etc.
What are the causes of bone marrow rarefaction?
This rarefaction occurs mainly due to migration of deposited calcium and phosphate from the bones to the blood etc. The reasons for this are many, including , endocrine ( hormone) dysfunction to decreased daily intake of calcium or various other diseases, like impaired kidney function or little exposure to sunlight or oldage etc.
What is rarefaction in medical terms?
Answer Wiki. Rarefaction is the term used to describe osteoporosis of the bones when seen by Radiography ( X-Ray) etc. This rarefaction occurs mainly due to migration of deposited calcium and phosphate from the bones to the blood etc.
What is the difference between compression and rarefaction?
Half of a sound wave is made up of the compression of the medium, and the other half is the decompression or rarefaction of the medium. Rarefaction is the reduction of an item’s density, the opposite of compression. Like compression, which can travel in waves (sound waves, for instance), rarefaction waves also exist in nature.