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Radiology cases 338-3328 Clinical presentation: 70 year old man with frequency, post-micturition dribbling and some back pain.
There is a marked increase in the bone density of lumbar vertebrae and a patchy increase in sacrum and pelvis. The density is not homogeneous in the spine and its extent over the transverse processes...

Radiology case 338-3320 Clinical presentation: 66 year old woman with back pain and previous abdominal surgery.
There are three dense lumbar vertebrae. L1 to L3. The body of L2 has some reduction in height. The pedicles of the affected vertebrae, atypically, remain visible. Branched lucencies are visible over the liver.

* M:F 2:1, 5 - 25 y/o (90%) (50% 10-20)
* pain at night - prostaglandin E2
* pain responds to salicylates
* tx: surgical excision of nidus, rare spontaneous regression
* location
o metadiaphysis and metapysis of long bones(73%)
...

Radiology case 455-3122
Immature skeleton, fairly well-defined low density lesion within an area of reactive sclerosis. The lesion is in the diaphysis. The cortex of the bone is thickened medially. The fairly large central nidus of lucency is not typical, but the histology was diagnostic.

Radiology case 436-3122 Clinical presentation: 30 year old man with a history of pain in the left middle finger, relieved by aspirin.
There is sclerosis of the proximal phalanx of the left middle finger. This takes the form of a peripheral mid-diaphyseal fairly well-defined 4mm. lucency and adjacent related cortical thickening.
The isotope...

Radiology case 415-3122 Clinical presentation: Male 23 years old, with a history of increasing pain in the left shoulder, relieved by aspirin.
The view shows a dense sclerosis in the proximal metaphysis of the humerus with a central lucent nidus, which is below 1cm diameter. Medially there is visible thickening by periosteal...

Osteoid osteoma is a benign osteoblastic (bone forming) tumor. It consists of a highly vascularized osteoid core. The growing core induces a peripheral zone of sclerosis and periosteal reaction. Diagnostic Radiology/Musculoskeletal Imaging/Tumors Basic/Osteoid ostemoa From Wikibooks, the open-content textbooks collection

benign tumor of the membranous bone (hamartoma)
* age: adult
* associated with Gardner syndrome
* location:
o inner/outer table of calvarium (usually outer)
o paranasal sinus (frontal, ethmoid)
...

insufficient mineralization of osteoid
etiology:
* dietary deficiency of vitamin D3, lack of solar irradiation
* deficiency of metabolism of vitamin D
o chronic renal tubular disease
o phenobarbitol, diphenylhydantoin
* decreased absorption of vitamin...

Radiology case 448-571 Clinical presentation: 29 year old female, from India, vegitarian. Back and hip pain, muscle weakness.
The are symmetrical linear defects in the superior rami of the pubis. The ischio-pubic synostoses are low density, widened and the bones are not aligned (in a 29 year old whose bones should be...

* site: junction of metaphysis + epiphysis
* types:
o pyogenic (Staph. aureus)
o TB
o syphilis
...

Radiology case 48--214 HIV patient
Clinical presentation: 13 year old admitted to A&E, following a fall and injury to right ankle. Formerly from Africa. Known immune compromised patient.
The initial ankle films showed some soft tissue swelling, but no visible bone injury. A review area is the fine line that lies just proximal...

Osteonecrosis bespeaks bone death. Synonyms include aseptic necrosis, bone necrosis, avascular necrosis, bone infarction and ischemic necrosis. By convention, the terms "aseptic" or "avascular" necrosis have been applied to areas of juxtaarticular involvement and the term bone infarct is usually applied to metaphyseal or diaphyseal involvement. However, this terminology is...

ACR-code 443-441 Clinical presentation: 63 year old caucasian man with recent pain and restricted movement of the right hip. He is a known case of Non-Hodgkin lymphoma and had been receiving a combination of high dose chemotherapy and steroids.
The image shows loss of the normal curve of the head of...

marble bones, brittle bones, osteosclerosis fragilis
* abnormally dense bones
* brittle, fracture easily
* "rugger jersey" spine
* may be cause of anemia (d/t obliterated marrow space)