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At least 1,351 records · Page 75Linked to original sources
PubMed1984

CT of tumors and tumor-like conditions of the paranasal sinuses.

High-resolution CT is an ideal technique for evaluating tumors of the paranasal sinuses. It offers excellent detail of both bony and soft tissue structures. CT can demonstrate a tumor in its early stage and can reveal the exact extent of a lesion for optimal staging prior to treatment. It is important in follow-up and can be used to document residual or recurrent tumor with a high degree of accuracy.

Carcinoma, Adenoid Cystic↗
PubMed1977

Hand images: normal and abnormal.

Supplemental hand scintigrams with abnormal features were obtained from 29% of patients (134 of 463) who were referred for routine minified bone imaging with 99mTc-Sn-polyphosphate. A wide spectrum of normal activity distribution ranging from well-defined to "wash-out" images is described in 329 cases (71%). In the abnormal images of the joints and individual bones, the changes--although not always characteristic of some particular disease--may often suggest a diagnosis and/or its pathophysiologic status. The joints with heavy uptake correlate well with the presence of active clinical findings, e.g., in the arthritides. The bone feature associated with metabolic disease, especially when full-blown, may be fairly characteristic. A potential application is in the assessment of digital circulation, particularly in obliterative vascular diseases such as scleroderma, Buerger's disease, chronic neuropathies, and possibly other collagen or vascular diseases that involve the hands. Interesting images, probably of somewhat limited usefulness, are observed in some congenital anomalies, fractures, camptodactyly, contracture deformities, unilateral lymphedema after mastectomy, etc.

Bone Diseases↗
PubMed1996

Gnathic diagnosis.

Explore the source record for details and available documents.

Bone Neoplasms↗
PubMed1977

[Shwachman's syndrome: pancreatic exocrine insufficiency retarded growth, metaphyseal dysostosis and neutropenia (author's transl)].

A boy of 5 8/12 years of age affected with Shwachman's Syndrome is presented. He showed frequent respiratory infections that can be in order with a low account in T-lymphocytes found on immunological study. A cytoplasmic degenerative process was found after microscopical and ultrastructural vision of osteoid tissue, which is compatible with biochemical alterations.

Biopsy↗
PubMed1976

Changes of bone histology during maintenance hemodialysis at various levels of dialyzate Ca concentration.

Bone histology (iliac crest biopsies; undecalcified sections; micromorphometry) was studied by repeated biopsies in 19 patients on maintenance hemodialysis. Sampling error was assessed by taking two biopsies at one time. After an initial biopsy, patients were dialyzed either against 3.6 mEq Ca/l dialyzate or 3.9 mEq Ca/l dialyzate for 9-16 months before a second biopsy was taken. Bone histology failed to normalize irrespective of the dialyzate Ca concentration. Surface density of endosteal fibrosis diminished in a considerable proportion of the patients (9/19). Volumetric density of osteoid fell in 5 and rose in 4 of the patients.

Adolescent↗
PubMed1990

Malignant transformation in fibrous dysplasia. A report of 3 cases.

Three patients with fibrous dysplasia were encountered in whom osteosarcoma subsequently developed. A review of published reports and the authors' experience establishes fibrous dysplasia as a premalignant bone lesion. Radiation appears to enhance the inherent tendency towards malignant transformation.

Adult↗
PubMed2003

Osteosarcoma in a patient with McCune-Albright syndrome and Mazabraud's syndrome: a case report emphasizing the cytological and cytogenetic findings.

Osteosarcomatous transformation in fibrous dysplasia is unusual. The incidence is increased in patients with concomitant Mazabraud's syndrome and McCune-Albright syndrome. We report the cytological, histological, and cytogenetic findings of this rare entity arising from a mass in the right elbow of a 44-year-old African-American woman. The fine-needle aspiration (FNA) findings were diagnostic of malignancy, with markedly atypical spindle and polygonal cells admixed with osteoid. The diagnosis of osteosarcoma by FNA was subsequently further confirmed by histological evaluation of an above-elbow amputation specimen. Fluorescence in situ hybridization and comparative genomic hybridization demonstrated trisomies of chromosomes 5 and 7 in the fibrous dysplasia and osteosarcoma. In addition, multiple chromosomal abnormalities were also noted in the osteosarcoma. We are unaware of any previous reports of the cytogenetic findings in the tissue of this rare condition, and argue for the value of FNA in the evaluation of such patients under selected conditions.

Adult↗