摘要:

Lesions of seborrheic keratoses were studied by scanning electron microscopy. Numerous yeasts were present on the keratinized cells and hairs associated with the lesions. Surfaces of some yeasts were smooth and others were ruffled. The ruffles suggested the presence of a glycocalyx. The yeasts exhibited the morphological features ofPityrosporum ovale.

ISSN:0303-6987    

DOI:10.1111/j.1600-0560.1980.tb00971.x

出版商:Blackwell Publishing Ltd    

年代:1980

数据来源: WILEY

摘要:

A case of lipoid proteinosis was subjected to clinical, histologic and electron microscopic study. Palpebral biopsies showed a large dermal infiltration composed of closely interwoven granulofilamentous material in the superficial and deep dermis. Collagen fibers were normal. Fibroblasts seemed to play an active role in the synthesis of this accumulating substance. Around the dermal capillaries there was a prominent concentric multilaminalion of the basal lamina which was considered a reaction of the endothelial cells to the irritation caused by compression of the accumulating substance.

ISSN:0303-6987    

DOI:10.1111/j.1600-0560.1980.tb00972.x

出版商:Blackwell Publishing Ltd    

年代:1980

数据来源: WILEY

摘要:

Bizarre cutaneous neurofibroma is an uncommon benign neoplasm. Microscopically, it is usually characterized by stellate and polyhedral cells embedded in a myxoid stroma, and less commonly by solid sheets of epithelioid cells. Cellular pleomorphism and mitotic figures are regular features and have resulted in erroneous diagnosis of malignancy. The mucinous material has the staining characteristics of a sulfated mucosubstance, probably chondroitin sulfate B. Terms previously applied to this lesion include nerve sheath myxoma. Pacinian neurofibroma, myxoid neurofibroma, and neurotheceoma.

ISSN:0303-6987    

DOI:10.1111/j.1600-0560.1980.tb00973.x

出版商:Blackwell Publishing Ltd    

年代:1980

数据来源: WILEY

摘要:

Seborrheic keratoses in five patients were rubbed and biopsied at varying intervals after injury. Microscopic examination revealed acute and chronic patterns of histologic change. Hemorrhage, hyalinization of dermal papillae, and necrosis of epithelial tips were conspicuous early changes. Specimens taken more than 48 h after rubbing showed a spectrum of changes which included: loss of epithelial mass, expansion and interconnection of keratin cysts, thinning of the epithelium, proliferation of epithelial strands from the residual epithelium, increase in size of epithelial cells, and evidence of hair follicle relationships including trichostasis spinulosa and, in one specimen, hair germ proliferation. Dermal lymphocytic infiltration was variable and only rarely involved the epithelium. These observations demonstrate a patterned response of the seborrheic keratosis to trauma, and also indicate a relationship between seborrheic keratosis and the hair follicle.

ISSN:0303-6987    

DOI:10.1111/j.1600-0560.1980.tb00974.x

出版商:Blackwell Publishing Ltd    

年代:1980

数据来源: WILEY

摘要:

Two elderly patients with unusual hair‐follicle tumors of the face are reported. The lesions showed some histologic resemblance to pilomatrixomas but differed by the presence at the advancing edge of cytologically‐atypical cells without the usual shadow cell transformation and maturation of pilomatrixomas. The term matrical carcinoma is proposed for these tum

ISSN:0303-6987    

DOI:10.1111/j.1600-0560.1980.tb00975.x

出版商:Blackwell Publishing Ltd    

年代:1980

数据来源: WILEY

摘要:

This case report illustrates the value of ultrastructural examination of an undifferentiated carcinoma metastatic to skin. In this patient, ultrastructural study of a cutaneous nodule demonstrated cytoplasmic neurosecrctory granules characteristic of an amino precursor‐uptake and decarboxylation cells (APUD) tumor and supported the diagnosis of metastatic bronchial carcinoid. Additional nine cases of bronchial carcinoids metastatic to skin are also briefly reviewe

ISSN:0303-6987    

DOI:10.1111/j.1600-0560.1980.tb00976.x

出版商:Blackwell Publishing Ltd    

年代:1980

数据来源: WILEY

摘要:

Multiple malignant melanocytic lesions developed in a 54‐year‐old man 4 years after a primary malignant melanoma (Clark level IV) had been excised and 2 months after taking L‐Dopa for Parkinsonism. Several of the recurrent lesions that showed junctional melanocytic components were considered primary melanomas and it was suggested that L‐Dopa was responsible for malignant transformation of nevi and for rapid progression of the disease. The case was re‐examined and on recent evidence it is likely that these lesions were epidermotropic metastases and that L‐Dopa played no part in the progress of this un

ISSN:0303-6987    

DOI:10.1111/j.1600-0560.1980.tb00977.x

出版商:Blackwell Publishing Ltd    

年代:1980

数据来源: WILEY

ISSN:0303-6987    

DOI:10.1111/j.1600-0560.1980.tb00978.x

出版商:Blackwell Publishing Ltd    

年代:1980

数据来源: WILEY

ISSN:0303-6987    

DOI:10.1111/j.1600-0560.1980.tb00979.x

出版商:Blackwell Publishing Ltd    

年代:1980

数据来源: WILEY

ISSN:0303-6987    

DOI:10.1111/j.1600-0560.1980.tb00980.x

出版商:Blackwell Publishing Ltd    

年代:1980

数据来源: WILEY