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Biomedical subjects

M Hagedorn

Publications and source records attributed to M Hagedorn.

At least 91 records · Page 5Linked to original sources
PubMed1983

[Pathogenesis of acrokeratosis Bazex].

A 67-year-old male patient with typical signs of acrokeratosis Bazex is presented. The psoriasiform skin lesions appeared 9 months after diagnosis of an oesophagus neoplasm. Clinically there was a marked hepatopathy but no signs of metastases. Histological, immunofluorescence-histological, and ultrastructural findings revealed a capillaritis with humoral as well as cellular inflammation. With treatment of the neoplasm the paraneoplasia regressed under additional treatment with topical steroids. The vitamin A deficit could not be normalized by oral or parenteral vitamin A substitution. We discuss some mechanisms in formal pathogenesis.

Aged↗
PubMed1982

Correlation between human papillomavirus (HPV) type and histology of warts.

Forty warts from different patients and of different clinical type were examined histologically and virologically. Eight lesions were found to be associated with human papillomavirus type 1 (HPV 1), 15 tumors were induced by HPV 2, HPV 3 was detected 4 times, HPV 4 twice, and HPV 6 eleven times. HPV 3, HPV 4, and HPV 6 induced warts revealed a correlation between histology and virus type. They are characterized by the so called "edematous type clear cells". In HPV 3 associated flat warts pycnotic nuclei were mainly localized in the center of large vacuoles. In genital warts sickle shaped nuclei were pushed to the margin of the vacuolized cells. The histology of HPV 1 and HPV 2 induced warts was more heterogenous. With one exception HPV 1-induced lesions represented typical myrmecia warts, varying in the number and shape of inclusion bodies. HPV 2 associated common warts, however, revealed 3 very distinct histologic features: (1) Inclusion wart typical for HPV 1, (2) Classical common wart with marked condensation of keratohyalin granules, (3) Warts with extreme vacuolization of squamous and granular cells leading to a honeycomb-like picture.

Animals↗
PubMed1981

A light and electron microscopic study of bowenoid papulosis.

Bowenoid papulosis of the genito-anal region was studied by light- and electron-microscopy. Histopathologically there was no difference between bowenoid papulosis and ordinary Bowen's disease. Conspicuous ultrastructural findings included: great variation of intercellular spaces, decrease in intact desmosomes, aggregation of tonofilaments resulting in dyskeratosis, and two types of intracellular vacuolization probably caused by invagination of plasma membrane.

Adult↗
PubMed1979

Monocytopoiesis in malignant melanoma: untreated, during immunotherapy and chemoimmunotherapy.

Monocytopoiesis and blood monocytes were investigated in patients with superficial spreading melanoma stages I and II. Monocyte production was moderately increased in 4 of 9 untreated patients. Postoperative prophylactic BCG-vaccination gave rise to increased proliferation activity in 3 of 4 patients with previously normal monocytopoiesis. However, monocyte production returned to normal between the 4th and 6th month of BCG immunotherapy. Monocytopoietic hyperproliferation did not occur if DTIC was administered simultaneously with BCG. These results indicate that BCG-vaccination increases monocytopoiesis during the first months of treatment only. This effect is abrogated by concomitant chemotherapy.

Adult↗
PubMed1979

Characterization of human papillomavirus 3 in warts of a renal allograft patient.

Multiple flat wart-like lesions of a renal allograft recipient were shown to contain HPV 3 or a serologically crossreacting virus by indirect immunofluorescence with monospecific animal antisera against HPV [1--5]. The patient's serum revealed virus specific antibodies (immunofluorescence titer 1/80). Papillomaviruses were isolated and after in vitro iodination 3 major proteins (MW 70.000, 56.000 and 43.000) were detected by SDS polyacryalmide gel electrophoresis. DNA was extracted from the warts and cleaved with the restriction endonuclease Hae III. Distinct bands were discernible within the background of cellular DNA and these fragments were identified as papillomavirus DNA by blot hypbridization with 32P-labeled viral DNA.

Adult↗
PubMed1979

[Multiple granulomata pyogenica in a patient with acne vulgaris (author's transl)].

Multiple granulomata pyogenica are usually satellites of a primary lesion recently treated unsuccessfully. Disseminated pyogenic granulomas are very uncommon. In our case report, we describe a young man with six granulomata pyogenica over the chest, after treating his acne with tetracycline and vitamin A acid. In the discussion, we include infection, trauma and vitamin A acid as factors which can induce the vascular tumor in the region of a vascular dysplasia.

Acne Vulgaris↗
PubMed1978

Further similarities between Sézary syndrome and mycosis fungoides.

Sézary syndrome and mycosis fungoides, both malignant Non-Hodgkin lymphomas, although characterized as specific entities, show a close relationship. This is based on striking similarities not only uith respect to morphological, cytophotometrical, cytogenetical and immunological findings, but also with respect to a typical common reaction pattern to photochemotherapy.

Aged↗
PubMed1978

The nasolabial flap for reconstruction of the alae nasi.

Cicatrizing basal-cell carcinomas, especially in the area of the alae nasi, require radical therapeutic treatment. Surgical removal, therefore, often results in penetrating defects. The nasolabial flap is recommended in such cases as a relatively simple operative method of reconstructing the lateral part of the nose. This technique offers favorable results in a curative and esthetic respect.

Basal Cell Carcinoma↗
PubMed1978

[Intrafocal BCG therapy of metastasizing malignant melanoma].

Therapeutical possibilities and side effects of intrafocal BCG-vaccination into metastases of malignant melanomas are discussed. Only in one of our three cases, this special method of unspecific immunstimulation induced a remarkable regression of tumor size. The second patient showed a partial remission and in the third there was no effect at all. Besides local irritation with ulceration we observed severe generalized side effects in all patients. A granulomatous hepatitis, which represents the most severe complication of this therapeutical method, occurred in one case. Its successful treatment with tuberculostatic agents favors the assumption of an infectious genesis.

Adult↗
PubMed1978

[Florid oral papillomatosis. A contribution to cytostatic therapy].

Based on the recent clinical experience in treating florid oral papillomatosis (FOP), the only successful therapy appears to be the use of cytostatic agents. The case report of a patient with clinically and histologically confirmed FOP is described to emphasize the advantages of administering Bleomycin intra-arterially (external carotid artery) by means of a Holter catheter. This catheter is used to release pressure in the treatment of internal hydrocephalus and is designed to remain in place for a number of years. The successful treatment of FOP points out the possibility of employing a Holter catheter for administering cytostatic agents in the treatment of malignant neoplasms in the facial area. Cytophotometric examinations of the prickle cells within the FOP mass showed a diploid pattern of DNA distribution similar to that of benigh tumors. However, it is not possible to definitely establish the malignant or benign nature of FOP in this manner.

Alopecia↗
PubMed1977

DNA content of mycosis fungoides cells.

DNA content of mycosis infiltrate cells was measured in 5 patients with the Feulgen cytophotometric method in the plaque and tumor stages. In addition, the infiltrate cells were differentiated cytochemically into histiocytes and atypical lymphoid cells with NaF-sensitive naphthol-AS-D-acetate esterase. In no case was an aneuploid stem line demonstrated. However, increasing duration of the tumor stage was associated with a larger proportion of tetraploid and octoploid cells. The DNA histograms also exhibited a local proliferation of atypical lymphoid cells. This proliferation was arrested by cytostatic therapy. Comparison with semi-thin-sections of tumor tissue showed that the mycosis fungoides cells are atypical lymphoid cells. These DNA measurements do not contradict the concept of limited aneuploidy, as reported in cytogenic studies. Thus mycosis fungoides fits in with the DNA distribution pattern in the group of lymphomas.

Adult↗
PubMed1977

[Morphology and monocytopoesis of mycosis fungoides].

Nature and nosology of mycosis fungoides have to be reconsidered because there is now evidence of the t-cell nature of the atypical lymphoid cells within the mycoside infiltrate. Therefore the concept of the reticulum cells in the pathogenesis of mycosis fungoides must be corrected. On the ground of morphological and immunological reasons these cells do not exist in the dermis at all. These new findings are the basis of our morphological study in patients with mycosis fungoides. Concentrating on the polymorphous lymphohistiocytic cells, which cannot be classified further by the method of paraffin-thin sections, light microscopically, the exact differentiation is only possible with semi-thin-sections. With this technique there can be made visible the typical features of nuclei of mycosis fungoides cells. The mycosis fungoides cells are characterized by a large nucleus with hyperconvoluted nuclear membranes, prominent nucleoli, irregular distribution of heterochromatin and sparse cytoplasma. The monocytopoiesis, scheduled by the relative number and the 3H-thymidine labeling indices of promonocytes and the activity of naphthol-AS-D-chloroacetate esterase in blood monocytes was markedly increased. These findings are of special interest, because macrophages are not only able to phagocyte but also play a crucial role in immunology. The elevated monocytopoiesis in all stages of mycosis fungoides points to a stimulation of the immunologic system. This supports the hypothesis of a persistent antigen, which stimulates by means of the functional intact monocyte-macrophage system the lymphocyte system leading to a permanent transformation with augmentation of these immunoblasts (mycosis fungoides cells).

Humans↗