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Biomedical subjects

S Selvaggi

Publications and source records attributed to S Selvaggi.

7 recordsLinked to original sources
PubMed1990

A common cytogenetic abnormality and DNA content alterations in dedifferentiated chondrosarcoma.

Dedifferentiated chondrosarcoma is an uncommon and aggressive variant of chondrosarcoma. The authors report the flow cytometric characteristics and cytogenetic findings in culture of two cases of dedifferentiated chondrosarcoma. The first case was DNA diploid by flow cytometry but had cytogenetic abnormalities consisting of breaks in the short arms of both chromosomes 1, resulting in deletion in one homolog and recombination in the other. In addition, cells from this tumor showed a balanced translocation between chromosomes 4 and 5, deletion of chromosome 9, and monosomy for chromosome 10. The second case was DNA aneuploid and more complex cytogenetically but had, in common with the first case, rearrangement and translocation at the same band on chromosome 1. These cytogenetic changes are compared with abnormalities previously reported for chondrosarcoma. Possible relationships between the nonrandom chromosomal abnormalities and subclassification among chondrosarcomas are discussed.

Aged↗
PubMed1990

Benign teratoma of the omentum and ovary coexistent with an ovarian neoplasm.

Benign cystic teratoma of the omentum is a rare abdominal tumor. Review of the literature describes seven reported cases of omental teratomas in association with ovarian teratomas. Our patient is a 68-year-old woman who presented with an asymptomatic abdominal mass and uterine prolapse. Ultrasound revealed a right-sided, cystic and solid pelvic mass. CT scan revealed a second mass with calcifications situated along the right iliac crest. This is the first description of an omental teratoma in association with a benign ovarian cystic teratoma coexistent with a malignant neoplasm. Possible etiologies of the present case are discussed and additional literature investigated.

Aged↗
PubMed1988

Colposcopic findings in women with vulvar pain syndromes. A preliminary report.

Of 105 women referred for vulvar discomfort, 77 had idiopathic vulvodynia (pain, dyspareunia, burning or pruritus not explicable by a standard diagnosis). Physical examination showed that patients with those complaints fell into one of two categories: (1) diffuse, irritative acetowhitening of both the cutaneous and mucosal surfaces (42 patients), and (2) painful vestibular erythema, with or without acetowhitening (35 patients). The physical findings appeared to be predictive of therapeutic response. Among women with only diffuse, irritative acetowhitening, low-dose topical 5 fluorouracil was about 75% effective in milder cases, while CO2 laser photovaporization controlled 77% of cases with moderate and severe symptomatology. In contrast, medical regimens succeeded in just 8% of women with painful vestibular erythema, and only 59% were cured by hymenal resection. Several of the remaining cases have responded to selective argon laser photocoagulation of the hyperemic blood vessels within symptomatic areas.

Adolescent↗
PubMed1984

Clonal culture and cytogenetics. Indicators of a variant of chronic myelogenous leukemia.

The clonal growth pattern of bone marrow and peripheral blood cells from 16 patients with clinically suspected chronic myelogenous leukemia (CML) was evaluated in the double-layer agar system. Cytogenetic studies were performed on parallel marrow and peripheral blood samples. In four cases a unique growth pattern emerged, characterized by normal or increased colony-forming units (CFUc), and markedly elevated cluster-forming units (CIFUc). Three of these were Philadelphia chromosome (Ph1)-negative (atypical CML) and the fourth showed a mixture of Ph1-positive and chromosomally normal cells (Ph1-negative). Of the remaining cases, five proved to be CML Ph1-positive with progression to blast crisis on the basis of clinical data, clonal culture, and cytogenetics, and seven proved to be disorders other than myeloid leukemia. The combined results from clonal growth and cytogenetics have added a new parameter in the diagnosis of atypical CML and may aid in the earlier diagnosis and treatment of patients with this CML variant.

Bone Marrow↗
PubMed1983

Histiocytosis-X: clonal culture, histocytochemistry, electron microscopy.

Pathologic interpretation of an osteolytic lesion from the skull of a 13-month-old boy was amplified by histocytochemistry of cells grown in a methylcellulose clonal culture system. Electron microscopy demonstrated the presence of X granules in the cytoplasm of malignant histiocytes, confirming a diagnosis of histiocytosis-X. Freshly fixed tissue containing histiocytosis-X cells and granulocytes showed histiocytosis-X cells that were positive for alpha-naphthyl acetate esterase (non-specific esterase) and negative with naphthol AS-D chloracetate as the esterase substrate (specific esterase). Clonal cell aggregates, harvested after 6 days' growth in culture, showed histiocytosis-X cells that were positive for both the nonspecific and specific esterases. Differences in staining reactions for the histiocytosis-X cells may be explained on the basis of immaturity of the histiocytosis-X cells growing in culture. This interpretation would support their origin from monocytes, monocytic precursors, or a still less differentiated myelomonocytic precursor cell. Furthermore, gel systems of clonally cultured cells appear to provide a useful tool for the growth and analysis of histiocytosis-X cells.

Clone Cells↗