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Biomedical subjects

D N Silvers

Publications and source records attributed to D N Silvers.

At least 91 records · Page 5Linked to original sources
PubMed1981

A distinctive variant of pernio. Clinical and histopathologic study of nine cases.

We describe here nine women who had similar distinctive clinical features that consisted of painful red-to-purple macules, papules, and plaques on the digits, predominantly on the toes. All patients reported that exposure to cold had preceded their symptoms. Histologic study demonstrated a lymphocytic vasculitis, characterized by lymphocytes infiltrating the walls of blood vessels in eight (88%) of nine lesions. This pattern of inflammation is different from the perivascular lymphocytic infiltrate that is common to lupus erythematosus, erythema multiforme, lymphocytic infiltration of the skin (Jessner), and drug eruptions. It also serves to distinguish the disorder from other clinical conditions resembling it, such as cellulitis, herpes simplex infection, and disseminated gonococcemia. To the best of our knowledge, this lymphocytic vasculitis has not been previously described as occurring in pernio. We believe the unique disorder that we are reporting is a common, but infrequently recognized, variant of pernio.

Adult↗
PubMed1980

Cutaneous manifestations of disseminated candidiasis.

Recognition of the characteristic cutaneous lesions of disseminated candidiasis may allow earlier diagnosis and treatment of this often fatal fungal infection. The skin lesion developed in patients with hematologic malignancies and compromised host defenses, at a time when they were febrile, clinically deteriorating, and failing to respond to multiple antibiotics. This report discusses two patients with acute myelogenous leukemia with cutaneous manifestations of disseminated candidiasis due to Candida tropicalis. Single or multiple erythematous or purpuric 0.5- to 1-cm papulonodules with pale centers were seen on the trunk and proximal extremities. In most reported cases of disseminated candidiasis with skin lesions, the diagnosis can be confirmed by histologic evaluation of a skin biopsy before appropriate cultures identify the organism.

Adult↗
PubMed1980

Treatment of dermatitis herpetiformis with colchicine.

Oral colchicine therapy was used successfully in the treatment of three patients with dermatitis herpetiformis, although the degree of disease control varied. The condition of a fourth patient did not improve. A trial of colchicine is suggested when conventional therapy with dapsone or sulfapyridine is contraindicated or when a gluten-free diet cannot be employed.

Administration, Oral↗
PubMed1979

Giant cells in male pattern alopecia: a histologic marker and pathogenetic clue.

Twenty-one of 65 (31%) biopsy specimens from patients with male pattern alopecia demonstrated the presence of individually displaced multinucleate giant cells without a significant concomitant cellular infiltrate. This finding was absent in a diverse group of other forms of alopecia. Whether individually displaced multinucleate cells are a useful histologic marker for diagnosing early stages of androgenetic alopecia remains to be determined.

Alopecia↗
PubMed1978

Ultrastructural study of superficial spreading melanoma and benign simulants.

Ultrastructural examination of the intraepidermal component of superficial spreading melanomas (SSM) and benign melanocytic lesions was undertaken to determine the diagnostic value of electron microscopy in clinically "borderline" melanoma problems. Seventeen SSMs and ten benign melanocytic nevi and lentigenes which clinically resembled melanoma were studied. Melanocytes of the intraepidermal component of the SSMs showed a greater tendency for abnormal melanosome formation than did melanocytes of the benign simulants. However, the abnormalities were variable and were not limited to the SSMs. Our observations suggest that qualitative ultrastructural evaluation cannot be reliably used differentiating SSMs from benign melanocytic lesions.

Diagnosis, Differential↗
PubMed1978

Intralesional corticosteroid therapy of chalazia.

Twelve adult patients with 17 chalazia underwent trial intralesional injection of triamcinolone acetonide. Seven chalazia resolved within two weeks after only one injection, and another six after two injections. Two lesions failed to respond to two injections, and two lesions responded to one injection, but either recurred or another lesion developed. Patients were satisfied with the procedure, which appears to be a safe, convenient, and effective altefnative to chalazion surgery.

Adult↗
PubMed1978

Cutaneous and vulvar melanoma: an update.

In conclusion, cutaneous malignant melanoma, regardless of site, is best managed by early recognition and appropriate conservative surgical treatment. Depth of tumor invasion at the time of definitive surgical intervention is the most accurate measure of prognosis. Radical surgical measures for deeply invasive high-risk primary lesions have yet to be proven effective in altering prognosis, and the patient's quality of life should be considered when such procedures are contemplated.

Female↗
PubMed1977

New world leishmaniasis. Serologic aids to diagnosis.

The increase in travel to endemic areas of South and Central America has led to an increase in the number of cases of cutaneous leishmaniasis diagnosed in the United States. Traditional methods of diagnosis for this disease include microscopical examination of infected tissue, culture of Leishmania on special media, and the leishmanin skin test. The present communication describes a case of cutaneous leishmaniasis and the difficulties that were encountered in diagnosis. New methods of serologic testing allow more prompt and accurate diagnosis.

Adult↗
PubMed1976

Focus on melanoma.

Explore the source record for details and available documents.

Cell Transformation, Neoplastic↗
PubMed1976

Ultrastructural and enzymic modulation of HeLa cells induced by sodium butyrate and the effects of cytochalasin B and colcemid.

Sodium butyrate causes HeLa cells to assume an elongated and jagged shape. Ultrastructurally this change is associated with the formation of bundles of microfilaments. Desmosomes were present between adjacent cells. No increase in microtubules was observed in the butyrate-treated cells. Butyrate induces an increase in the activity of 2 membrane-bound enzymes, alkaline phosphatase and 5'-nucleotidase; however, the activity of a third membrane enzyme, acetylcholine esterase, is reduced. The activities of the several other enzymes with different subcellular localizations are not significantly increased. Colcemid and cytochalasin B prevent or reverse the butyrate-mediated change in HeLa cell morphology and also partially inhibit the induction of alkaline phosphatase activity in these cells. The effect of cytochalasin B on alkaline phosphatase induction may be caused by a reduction in protein synthesis produced by this fungal metabolite.

Acid Phosphatase↗
PubMed1976

Familial malignant melanoma.

Two sisters simultaneously developed a superficial spreading malignant melanoma on their legs. Concurrently, a brother was affected with fatal metastatic melanoma. Several explanations for familial malignant melanoma are reviewed, including: 1. Genetically determined predisposition; ,2 Phenotypic and environmental factors; and 3. Infectious etiology (virus?). Relatives of patients who develop malignant melanoma spould be aware that they have a higher risk than the general population of developing this serious type of cancer.

Female↗