摘要:

The morphological variants of dermal fibrous histiocytomas have engendered a confusing terminology. One hundred and eighty‐nine cases of fibrous histiocytomas were studied in order to define the morphological spectrum exhibited by these lesions.Based on the prevailing morphological components, fibrocollagenous, vascular, or histiocytie. an arbitrary division into three main categories was made. A fourth group was defined to include those cases in which a fully developed storiform pattern was the dominant morphological feature. The majority (115 cases) of the lesions were of the fibrocollagenous variety. Lesions with an angiomatous component (vascular variety) were the next most common (41 cases). Thirteen of the tumors were of the histiocytic variety.Twenty tumors were of the storiform variety and fulfilled many of the microscopic criteria of dermatofibrosarcoma protuberans. This latter group often presents a diagnostic problem and may stimulate fibrosarcoma, aggressive fibromatosis or other connective tissue neoplasias. The combination of several clinical and pathological features are helpful in better separating this variety from the more benign forms.The presence of different well‐defined morphological components developing in the same tumors suggests a common ori

ISSN:0303-6987    

DOI:10.1111/j.1600-0560.1974.tb00621.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

Four cases of Riehl's melanosis were studied with light and electron microscopes. The results obtained were as follows:1Unmyelinated nerve fibers were found in both the epidermis and the dermis, and the Schwann cells enclsing the axons contained melanosomes. A peculiar pigment cell was found in the epidermis, it was thought to be a macrophage phagocytizing melanosomes from the extracellular spaces. A melanophage in contact with a keratinocyte through the gaps of the basal lamina was observed. It was suggested that all these processes might participate in pigmentary incontinence in Riehl's melanosis.2At the dermo‐epidermal junction the basal lamina was multilayered. In the upper dermis a large number of melanophages were present, and in addition, amyloid islets and fibrillar masses resembling the “fibrilläre Körper” were o

ISSN:0303-6987    

DOI:10.1111/j.1600-0560.1974.tb00622.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

The activities of five enzymes were determined by fluorometric micromethods in epidermal tumors (basal and squamous cell epithelioma, keratoacanthoma and verruca seborreica) and compared to the activities in the adjoining, apparently normal epidermis. All activities were higher in the tumoral tissues.

ISSN:0303-6987    

DOI:10.1111/j.1600-0560.1974.tb00623.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

We are reporting the first instance of cutaneous Protothecosis observed in Iran. A brief review is made of ten other cases of human prototheca infection of which only five showed primary cutaneous involvement.

ISSN:0303-6987    

DOI:10.1111/j.1600-0560.1974.tb00624.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

This paper describes a case of Marchesani syndrome. Special attention has been paid to the clinico‐pathologic manifestations of the skin and the x‐ray findi

ISSN:0303-6987    

DOI:10.1111/j.1600-0560.1974.tb00625.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

ISSN:0303-6987    

DOI:10.1111/j.1600-0560.1974.tb00626.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

ISSN:0303-6987    

DOI:10.1111/j.1600-0560.1974.tb00627.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY