osteoid


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osteoid

 [os´te-oid]
1. resembling bone.
2. the organic matrix of bone; young bone that has not undergone calcification.
osteoid osteoma a benign hamartomatous lesion of cortical bone in young persons. There are small sclerotic bone-forming areas visible on technetium diphosphate bone scan. The small central nidus produces large amounts of prostaglandin. There is often night pain, which may be responsive to nonsteroidal antiinflammatory drugs. Lesions may be excised in toto or may be treated with nonsteroidal antiinflammatory drugs, and often undergo involution in 5 to 7 years.

os·te·oid

(os'tē-oyd),
1. Relating to or resembling bone. Synonym(s): ossiform
2. Newly formed organic bone matrix before calcification.
[osteo- + G. eidos, resemblance]

osteoid

(ŏs′tē-oid′)
adj.
Resembling bone.
n.
The bone matrix, especially before calcification.

os·te·oid

(os'tē-oyd)
1. Relating to or resembling bone.
2. Newly formed organic bone matrix before calcification.
[osteo- + G. eidos, resemblance]

osteoid

Resembling bone.

os·te·oid

(os'tē-oyd)
1. Relating to or resembling bone.
2. Newly formed organic bone matrix before calcification.
Synonym(s): osteosarcoma.
[osteo- + G. eidos, resemblance]
References in periodicals archive ?
In recent years, CT-guided RFA has replaced en bloc surgical resection as the standard of care in the majority of cases of osteoid osteoma.
Angiogenesis was reduced in all the groups by comparison with the second week, and osteoid was hardly ever found in the cases (figure 6).
Recurrence rate is less than 10% with power burr.8 A new non-invasive radiation-free method is under observation - magnetic resonance guided focussed ultrasound ablation technique - which focuses ultrasound waves on osteoid osteoma.
Importantly, however, a measurable callus comprising a mixture of fibrous, cartilaginous, and osteoid tissue components in varying degrees was observed.
The observation of chondroblastic matrix with the osteoid formation and histopathological grade II or III were considered the foremost lesions on histopathological examination in the patient of the case (3).
(e) Histopathological image showing mature well-capsulated adipose tissue with intermittent osteoid. (f) Lamellar osseous tissue adjacent to adipose tissue visible on higher magnification.
Microscopically, these lesions show varying components of osteoid, osteoblastic cells, and spindle cells [4].
(3) retrospectively reviewed patients with benign bone lesions and documented that 30% of the diagnosable lesions were osteochondromas, 28% bony cysts, 12% en-chondromas, 11% osteoid osteomas, and 6% non-ossifying fibromas.
The neoplastic bone is eosinophilic when unmineralized (osteoid) and basophilic/purple if mineralized.
Foci of bone and osteoid formation were also seen (Figures 3 and 4).
The following parameters were identified: bone volume/total tissue volume (BV/TV), %; mineralized volume/total tissue volume (MV/TV), %; osteoid volume/bone volume (OV/BV), %; osteoid volume/total tissue volume (OV/TV), %; bone surface area/bone volume (BSA/BV), %; bone surface area/total tissue volume (BSA/TV), %; trabecular thickness (TbTh), [mu]m; trabecular number (TbN), mm; and intertrabecular space (TbSp), [mu]m.