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Biomedical subjects

K Prechtel

Publications and source records attributed to K Prechtel.

At least 37 records · Page 2Linked to original sources
PubMed1985

[Long-term study of women with biopsy-proven mastopathy].

Out of a total of 1306 women (average age 42 years) with a biopsy proven mastopathy, manifest ipsilateral carcinoma occurred in 13 during the following 6 years. Thus the incidence of carcinoma differed little from the expected number of new cases in women of a comparable age. However, subdivision of breast lesions into simple (n = 1052) and proliferative (n = 254) forms showed that the carcinoma risk is double in proliferative mastopathy and fourfold higher when mastopathy with atypical epithelial proliferation is considered. An association with contraceptive hormones was not seen.

Adult↗
PubMed1978

[Pathological-anatomical aspects of organ-preserving surgical procedures for breast carcinomas (author's transl)].

This study is an attempt to evaluate the necessity of radical surgery based on the incidence of tumor remnants and lymphnode metastases in amputated breast after diagnostic excision. The material included 600 female patients, from 27-86 years old (mean age 58 years) examined at the Institute of Pathology University of Munich between 1969 and 1974. Retrospectively 36% of the specimen would have been free of tumor after en bloc resection, 21% simple mastectomy and 19% after simple mastectomy with additional axillary lymph-node disection. In fact, however, radical mastectomy was necessary in 25% for total removal of the tumor. As no methods for exact preoperative determination of tumor extension are yet known and as there is a high risk of recurrant tumor because of insufficient excision, organ-preserving surgical procedures still will be restricted to a few individual and selected cases of breast carcinoma presuming the patients consent.

Adult↗
PubMed1978

Sinus histiocytosis with massive lymphadenopathy and paraparesis: remission with chemotherapy. A case report.

A case of sinus histiocytosis with massive lymphadenopathy (SHML) in which cranial nerve function was impaired is described. Severe paraparesis due to an epidural block at the C2 and C5-T2 levels was also present. Treatment with cytotoxic agents resulted in a dramatic decrease in the size of the involved lymph nodes and disappearance of neurological symptomatology. A review of the literature revealed that, although the disease is benign in its clinical course, the process is not restricted to the lymph nodes. The case reported here is the second case in which the epidural space was affected.

Adolescent↗
PubMed1977

[Megakaryocytic myelosis: clinical and morphological features (author's transl)].

In general, megakaryocytic myelosis is nowadays considered to be a separate disease entity, one of the myeloproliferative syndromes. Morphologically there are localised or diffuse proliferations of usually large pleomorphic megakaryocytes and immature atypical megakaryocytes up to megakaryoblasts in the bone marrow, in the sense of a haemoblastosis. In the course of the disease megakaryocytic splenomegaly develops. A sarcomatous form (megakaryoblastoma, megakaryo-sarcoma) is rare. Megakaryocytic myelosis may arise from chronic meyloid leukaemia or polycythaemia vera, rarely as a transitional stage to an acute myeloblastic leukaemia or megakaryoblastic leukemia in the sense of a blast crisis. The mature form of the disease, which has an age peak at 59 years and is not sex-linked, often takes a course over years with increasing splenomegaly, anaemia, moderate leucocytosis and usually marked thrombocytosis (average value of 720 X 10(9)/1). Life threatening complications are haemorrhages, thromboembolism and increased frequency of infections due to antibody deficiency in the advanced stage.

Adult↗
PubMed1977

[Radiological bone patterns compared with pathological and anatomical appearances (author's transl)].

In the present study, radiographs of the skeleton were compared with relevant pathological sections; in this way some information could be more clearly brought out and changes in the structure and contours of bones could be classified. The radiographs were compared with photographs of the actual specimen. For this purpose either plain radiographs or tomographic cuts were used. In addition, bone sections were studied by a radiographic magnification method in order to improve detail recognition.

Bone Diseases↗
PubMed1977

[Studies on toxicity and fertility of escin in the rat (author's transl)].

The DL50 of escin was determined after i.p. application. Juvenile male rats were treated with 2X5 mg/kg escin at age 32 days. After they had reached fertility, kidneys, testes and sperm were examined. The high dose of escin used did not affect fertility and a nephrotoxic activity could not be detected either.

Age Factors↗
PubMed1976

[Generalized progressive vaccinia in a child with primary humoral and cellular immunodeficiency (author's transl)].

A case of generalized progressive vaccinia with lethal outcome after smallpox vaccination observed in an 8 months old girl during 1968 is reported. This complication was the first sign of an underlying immune deficiency in this child. The most conspicious findings suggesting a humoral immune defect were an absent serum IgM in combination with decreased IgA and IgG levels. An additional cellular defect was suggested by a generalized hypoplasia of the thymus and the entire lymphatic system as shown during autopsy. Vaccinia virus could be found not only in skin eruptions intra vitam but also in lung, liver and brain tissue in post mortem studies.

Autopsy↗
PubMed1975

[Extracranial metastasis of meningeal tumors. Malignant meningioma with regional lymph node metastasis].

Metastases of a meningioma occurred in a 45-year-old man 4 years after removal of a falx meningioma and 1 year after removal of a malignant relapse. They were situated in the cervical, nuchal, and supra-clavicular lymph nodes. The review of 63 cases of metastasising meningial tumours from the literature, shows that lymph nodes are the most frequent site of metastases after lung and liver. The spreading of the tumour into the regional lymph nodes requires a penetration of the primary tumour into the galea, where the tumour cells may reach the lymphatic system. According to the literature, lymph node metastases are caused by benign as often as by malignant meningiomas, the majority being cases who underwent operation. Discussed, are the different theories as to why intracranial tumours only rarely show extracranial metastases.

Brain Neoplasms↗