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Topic: Osteoid

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	Bonetumor.org - The Web's Most Comprehensive Bone Tumor Resource
		Osteoid Osteoma is a benign bone lesion with a nidus of less than 2 cm surrounded by a zone of reactive bone.
		The classic radiological presentation of an osteoid osteoma is a radiolucent nidus surrounded by a dramatic reactive sclerosis in the cortex of the bone.
		On gross examination, osteoid osteoma is a brownish-red, mottled and gritty lesion that is distinct from the surrounding bone.
	www.bonetumor.org /tumors/pages/page13.html (451 words)

	OSTEOID OSTEOMA - RF Ablation (Site not responding. Last check: 2007-10-29)
		Osteoid Osteoma is found in the diaphysis or the metaphysis of the proximal end of the bone more often than the distal end.
		Osteoid osteoma has a distinct clinical picture of dull pain that is worse at night and disappears within 20 to 30 minutes of treatment with non-steroidal anti-inflammatory medication (normally Aspirin).
		of an osteoid osteoma is a radiolucent nidus surrounded by a dramatic reactive sclerosis in the cortex of the bone.
	www.osteomaosteoide.it /indexUK.html (897 words)

	Osteoid -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-29)
		Osteoid is primarily composed of type 1 (A fibrous scleroprotein in bone and cartilage and tendon and other connective tissue; yields gelatin on boiling) collagen.
		When there is insufficient mineral or osteoblast dysfunction, the osteoid does not mineralize properly, and it accumulates.
		This process is called (Abnormal softening of bones caused by deficiencies of phosphorus or calcium or vitamin D) osteomalacia.
	www.absoluteastronomy.com /encyclopedia/o/os/osteoid.htm (77 words)

	Rare Pediatric Disease Database (Site not responding. Last check: 2007-10-29)
		Osteoid osteoma is a small, painful, benign overgrowth of bone.
		Seventy percent of osteoid osteomas occur in the long bones of the arms and legs with the spine being affected in 15% of children.
		It may be difficult to distinguish osteoid osteoma from malignant osteoblastoma, a cancer of the bone, and another bone abnormality called Brodie abscess (collection of pus).
	www.madisonsfoundation.org /content/3/1/display.asp?did=553 (545 words)

	OSTEOID OSTEOMA - Bibliography (Site not responding. Last check: 2007-10-29)
		Osteoid osteoma: CT-guided percutaneous radiofrequency ablation and follow-up in 47 patients.
		Osteoid osteomas of the foot and ankle are relatively rare and notoriously difficult to diagnose.
		Osteoid osteoma is known as a benign bone-producing tumor.
	www.osteomaosteoide.it /bibliografiaUK.html (1989 words)

	BioMed Central \| Full text \| Ethmoidal osteoid osteoma with orbital and intracranial extension - a case report
		Osteoid osteoma is a benign bone neoplasm which is seen in the long bones of appendicular skeleton.
		Osteoid osteoma is a rare benign osteoblastic lesion usually involving the long bones of the lower limbs.
		Osteoid osteoma is a benign osteoblastic lesion and constitutes 1% of all bone tumors and 11% of benign bone lesions [1].
	www.biomedcentral.com /1472-6815/5/2 (1481 words)

	uhrad.com - Musculoskeletal Imaging Teaching Files
		Discussion: An osteoid osteoma is a benign osteoblastic tumor comprised of a central core of vascular osteoid tissue and a peripheral zone of sclerotic bone.
		Approximately 50 to 60% of osteoid osteomas occur in the femur or tibia.
		A spinal osteoid osteoma is one of the causes of painful scoliosis, and excision of the lesion in adolescents usually results in complete resolution of the abnormal spinal curvature.
	www.uhrad.com /msiarc/msi084.htm (715 words)

	Atypical Appearance of Osteoid Osteoma
		Often bone scintigraphy is performed in osteoid osteoma as the primary diagnostic modality when the clinical history is atypical or vague, or when the radiographs are equivocal or normal.
		Because the scintigraphic appearance of osteoid osteoma on delayed images may vary from an extremely localized mild increased activity (1), blood pool images at five minutes should be performed.
		Diagnosis of obscure childhood osteoid osteomas with the bone scan (abst).
	www.med.harvard.edu /JPNM/BoneTF/Case17/WriteUp17.html (613 words)

	Fluoride & Osteoid
		The presence of increased amounts of osteoid tissue in patients exposed to high-F dialysate is consistent with the observations of DeVeber and associates...
		The increase in osteoid appeared to be due to an increase in the number of osteoid-producing cells (osteoblasts) along with a subsequent delay in the mineralization of this tissue."
		The increase in periosteal osteoid width was sufficiently more than the increase in periosteal matrix apposition in both experiments 1 and 2 so as to result in a prolongation of the mineralization lag time (i.e.
	www.fluoridealert.org /health/bone/fluorosis/osteoid.html (2250 words)

	Osteoid Osteoma
		Osteoid osteoma is a benign osteoblastic tumor with distinctive histologic abnormalities consisting of a central core of vascular osteoid tissue (the nidus) surrounded by a peripheral zone of sclerotic bone.
		In the long tubular bones, the osteoid osteoma is typically located in the diaphyseal cortex; the nidus is a radiolucent lesion with peripheral bone sclerosis and cortical thickening from endosteal and subperiosteal new bone formation.
		On scintigraphy, osteoid osteoma appears as an increased area of radiotracer uptake on the blood-flow, blood-pool and delayed phases of the bone scan.
	brighamrad.harvard.edu /Cases/bwh/hcache/54/full.html (800 words)

	eMedicine - Osteoid Osteoma : Article Excerpt by: Ali Nawaz Khan, MBBS, FRCP, FRCR (Site not responding. Last check: 2007-10-29)
		Background: Osteoid osteoma is a benign skeletal neoplasm of unknown etiology that is composed of osteoid and woven bone.
		Intra-articular osteoid osteomas are difficult to identify, and a delay of 4 months to 5 years before diagnosis is not unusual.
		Subperiosteal osteoid osteoma a rare form of the disease, and it usually presents as a rounded soft-tissue mass adjacent to a bony cortex, which it excavates.
	www.emedicine.com /radio/byname/osteoid-osteoma.htm (606 words)

	MGH Department of Radiology - Osteoid Osteoma - What Is Osteoid Osteoma?
		Osteoid osteoma is a benign bone-forming tumor that was first described in 1935.Although most doctors rarely see patients with this condition, compared to other types of bone tumors it is relatively common.
		Osteoid osteoma may occur in any part of any bone, but is most frequent in the legs, especially the femur.
		Pain due to osteoid osteoma most often begins as a dull aching sensation, becoming sharper and more severe with time.
	www.massgeneralimaging.org /Osteoid_Osteoma_Site/NewFiles/WhatIsOO.html (190 words)

	Osteoid Osteoma - Wheeless' Textbook of Orthopaedics
		Minimally invasive surgery for osteoid osteoma of the proximal femur.
		Osteoid osteoma: 95 cases and a review of the literature.
		Osteoid osteoma of the proximal femur: New techniques in diagnosis and treatment.
	www.wheelessonline.com /ortho/osteoid_osteoma (637 words)

	MGH Department of Radiology - Osteoid Osteoma - FAQs
		Osteoid osteoma is usually found in children and young adults.
		It is rare in very young children (less than 3 years) and in adults over the age of 40.
		There is usually prompt pain relief with nonsteroidal antiinflammatory agents (such as aspirin and ibuprofen), but relief may be of variable duration.
	www.massgeneralimaging.org /Osteoid_Osteoma_Site/NewFiles/FAQs.html (193 words)

	Case#18
		The lesion is composed of thin, often interconnected spicules of osteoid and woven bone rimmed by osteoblasts.
		Osteoid osteoma is a common, benign, bone-producing neoplasm characterized by a small size, limited growth potential, and a tendency to cause extensive reactive changes in surrounding tissues.
		Osteoblastoma is a benign bone-forming neoplasm, which is closely related to osteoid osteoma.
	www.umdnj.edu /tutorweb/case18.htm (415 words)

	Diagnostic Radiology/Musculoskeletal Imaging/Tumors Basic/Osteoid ostemoa - Wikibooks
		Osteoid osteoma is a benign osteoblastic (bone forming) tumor.
		Osteoid osteoma: common, not expanisle, < 2cm in diameter, always has peripheral sclerosis, and frequently located in femur/tibia.
		Osteoid Osteoma by Erin Gensch, M.D., Ph.D., University of Washington Department of Radiology.
	en.wikibooks.org /wiki/Diagnostic_Radiology/Musculoskeletal_Imaging/Tumors_Basic/Osteoid_ostemoa (409 words)

	Osteoid Osteoma - Children's Hospital Boston
		An osteoid osteoma is a benign, bone-forming tumor that occurs most often in the long bones of the lower extremities.
		Osteoid osteomas are very small tumors that do not grow larger that half an inch in diameter.
		Treatment for osteoid osteoma traditionally involved an operation to remove the tumor performed by an orthopaedic surgeon.
	www.childrenshospital.org /az/Site1078/mainpageS1078P0.html (1090 words)

	Jaffe described in 1935 osteoid osteoma as a bone-forming... (Site not responding. Last check: 2007-10-29)
		Jaffe described in 1935 osteoid osteoma as a bone-forming...
		The essential part of an osteoid osteoma is the nidus, consisting of richly vascularized osteoblastic osteoid tissue and is generally less than 1 cm in diameter
		Osteoid osteoma of the carpals may cause swelling and synovitis of the neighboring joints.
	www.indegene.com /Ort/ClinRound/indOrtCase12.html (437 words)

	Journal of Bone and Joint Surgery: Interstitial laser photocoagulation for the treatment of osteoid osteoma: Results of ...
		Osteoid osteoma is a benign tumour of bone characterised by an osteoid-rich nidus in a highly vascular connectivetissue stroma.1 Its size (
		Two patients had delayed healing of the needle puncture marks and one with an osteoid osteoma of the distal phalanx of the second toe lost the nail.
		The aim of treatment of patients with an osteoid osteoma is primarily to relieve pain.
	newssearch.looksmart.com /p/articles/mi_qa3767/is_200011/ai_n8911952 (1368 words)

	Osteoid Osteoma Of The Lumbar Spine Masquerading As Stress Fracture (Site not responding. Last check: 2007-10-29)
		Osteoid Osteoma Of The Lumbar Spine Masquerading As Stress Fracture.
		In view of the sports career of the patient, meticulous care was taken during the surgical excision not to violate the facet joints at L4-5 and L5-S1 levels.
		Material collected during surgery was sent for histopathology and the diagnosis of osteoid osteoma was confirmed.
	www.gangahospital.com /caseofweek/o-osteoid/cow1.html (417 words)

	Osteoid Osteoma Excision - Medical Computing Lab at Queen's University
		An osteoid osteoma is a small, benign, active, painful osteoblastic bone lesion.
		To effect a cure, the entire nidus must be removed because residual nidus is associated with recurrance of the osteoid osteoma.
		Traditionally, osteoid osteomas are removed by shaving the bone overgrowth, removing the tumour, and implanting a plate for added strength.
	www.cs.queensu.ca /mcl/ooe.htm (421 words)

	eMedicine - Osteoid Osteoma : Article by Ali Nawaz Khan, MBBS, FRCP, FRCR (Site not responding. Last check: 2007-10-29)
		CT scans may not help in diagnosing osteoid osteoma when the nidus is in a cancellous location because of a lack of changes in attenuation around the nidus.
		Because backache is common, symptoms of an osteoid osteoma may be ignored, or an osteoid osteoma may not be considered as the cause.
		Lateral view of the lumbar spine in a 52-year-old man who had a biopsy-proven giant osteoid osteoma (osteoblastoma) and who presented with severe low back pain (same patient as in Images 15 and 17-19) The radiolucent nidus is seen clearly, with a central area of sclerosis consistent with osteoid osteoma.
	www.emedicine.com /radio/topic498.htm (4205 words)

	Osteoid osteoma: a case for conservative management -- Feletar and Hall 41 (5): 585 -- Rheumatology
		resonance imaging (MRI) in osteoid osteomas is accumulating.
		Osteoid osteoma: a clinicopathologic study of 20 cases.
		Osteoid osteoma: MR imaging of two untreated lesions.
	rheumatology.oupjournals.org /cgi/content/full/41/5/585 (732 words)

	Osteoid osteoma. The double density sign - Wheeless' Textbook of Orthopaedics
		The precise localization of the nidus of an osteoid osteoma often can be difficult using nothing more than conventional radiographs.
		In a series of 35 patients, a radionuclide and double density sign facilitated localization of the nidus, confirmed the diagnosis, and aided the surgeon in excision biopsy.
		Fifteen cases of osteoid osteoma were studied with Tc-99m-MDP radionuclide bone scan.
	www.wheelessonline.com /lib9/130.htm (140 words)

	Vertebral Osteoid Osteoma: Diagnosis and Intraoperative Assistance through Scintigraphy
		Osteoid osteoma was described by Jaffe in 1935 as a benign bone tumor composed of osteoid and woven bone.
		Osteoid osteoma more commonly affects males than females with a male-to-female ratio of approximately 2:1.
		Subperiosteal osteoid osteomas are the rarest type usually presenting as a soft-tissue mass adjacent to a bony cortex.
	www.med.harvard.edu /JPNM/CH/Sept2303/WriteUp.html (794 words)

	Journal of Bone and Joint Surgery: Peripheral osteoid osteoma: Is there still a place for traditional surgery?
		Osteoid osteoma, originally described by Jaffe in 1935, is a benign osteoblastic tumour of unknown aetiology.1 It is usually less than 2 cm in diameter with distinct margins surrounded by a sclerotic zone of reactive new bone.
		1-6 Osteoid osteoma represents about 10% to 12% of benign bone tumours.1,4-6 Patients are usually younger than 25 years with a male:female ratio which varies between 2:1 and 5:1.
		One patient underwent surgery for osteoid osteoma in the radius in both arms.
	newssearch.looksmart.com /p/articles/mi_qa3767/is_200203/ai_n9083447 (1217 words)

	Osteoid Osteoma: Percutaneous Treatment with Radiofrequency Energy -- Rosenthal et al. 229 (1): 171 -- Radiology
		of having osteoid osteoma underwent 271 ablation procedures.
		CONCLUSION: CT-guided percutaneous RF ablation of osteoid osteoma
		Osteoid osteoma: CT-guided percutaneous resection and follow-up in 38 patients.
	radiology.rsnajnls.org /cgi/content/full/229/1/171 (3271 words)

	Technical Considerations in CT-Guided Radiofrequency Thermal Ablation of Osteoid Osteoma: Tricks of the Trade -- Pinto ...
		Osteoid osteoma is a benign, slow-growing, round or oval lesion
		Spinal lesions compose 10% of cases of osteoid osteoma.
		Osteoid osteoma is a benign lesion of bone affecting a young
	www.ajronline.org /cgi/content/full/179/6/1633 (5067 words)

	Journal of Bone and Joint Surgery: Osteoid osteoma / Author's reply
		Mahboubi S. CT appearance of nidus in osteoid osteoma versus sequestration in osteomyelitis.
		Goldman AB, Schneider R, Pavlov H. Osteoid osteomas of the femoral neck: report of four cases evaluated with isotopic bone scanning.
		Osteoid osteoma: MR imaging versus CT. Radiology 1994;191:217-23.
	www.findarticles.com /p/articles/mi_qa3767/is_200003/ai_n8892804 (477 words)

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