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Biomedical subjects

P B Diezel

Publications and source records attributed to P B Diezel.

12 recordsLinked to original sources

Volume, staging and grading of gastro-intestinal carcinoma--a population-based study.

All cases of the Regional Cancer Registry, North Baden who developed a gastro-intestinal cancer during the period 1975-1980 were re-examined according to the following parameters: tumor volume, pT stage, pN stage, grading. In the period considered, 8424 cases out of 14,061 cases with histologically proven gastrointestinal cancer could be grouped according to the pT stage. Most of the cases were operated at the pT2 or pT3 stage. Remarkable differences in the different tumor localizations were obtained. Stomach carcinoma had the highest percentage of the pT4 stage (36.2%), rectum carcinoma the lowest (7%). In all primaries a close coherence of tumor volume and pT stage was noted. Carcinoma at the pT1 stage measured 20 cm3 on average, those at the pT4 stage 170 cm3. No coherence of staging and age of the patients could be obtained. Younger patients showed a higher percentage of undifferentiated carcinoma than older patients. Survival data could not be obtained due to the data protection law.

Adult↗

[Population based data in North Baden on malignant tumors of the gastrointestinal tract].

Population-based data of malignomas of the gastro-intestinal tract were evaluated from the regional cancer registry North-Baden for the period of 1971-1980. The age standardized incidence of oesophagus carcinomas shows a steady level of 4.5/100,000 (males) and 0.5/100,000 (females); the age standardized incidence of stomach carcinomas increased from 1971 to 1974, then shows a decline for both males and females, where the colon carcinomas show an increase of 80% for the same time period, also the cancer of the small intestines and of the rectum, increased slightly. Compared to data of other cancer registries the world standardized incidence of rectum carcinomas is of the same level as the data from the cancer registry of Bas-Rhin and is with an incidence of 25.8/100,000 males; 16.2/100,000 females above the incidence of all other cancer registries. The post-operative TNM-stage differs for the different primary topographies. Especially patients with colon carcinomas were operated when the carcinoma was in an advanced stage, patients with rectum carcinomas were operated at a less advanced stage. Male patients with an oesophagus carcinoma showed in a significant percentage an advanced smoking and alcohol consumption, compared to patients suffering from stomach, colon or rectum carcinomas. The specialized organisation of the cancer registry shows a high efficiency due to the requirements of the public health system, and is very useful in the evaluation of descriptive and analytic population-based cancer data.

Adult↗

[Unusual course of morbus Hodgkin during remission of acute lymphatic leukemia].

6 years after the beginning of acute lymphatic leukemia and 3 years after the end of its therapy M. Hodgkin stage Ia was diagnosed in a then 18-years-old girl. From the same location--left neck--enlarged lymph nodes had been removed already during the maintenance therapy of leukemia. A malignant disease was neither proven nor excluded at that time, when signs of immunodepression were present. The patient is now in complete remission for both diseases.

Adolescent↗

Morphological studies in tissues surrounding alloarthroplastic joints.

Histological, histochemical and ultrastructural studies were done on soft tissue surrounding alloarthroplastic joints. In 38 cases a prosthesis of the hip joint and in 2 cases of the knee had to be exchanged and replaced. In most of the cases the reoperation became necessary because the anchoring of the prosthetic parts in the bone loosened. Up to 18 months after the first operation infection was responsible for the malfunctioning in some cases. Other complications were luxation and material faults. The morphological changes are determined by the tissue reaction to the different alloplastic materials used and by the time interval they remained in the organism. The large polymerized acrylic cement particles are phagozytosed by multinucleated foreign body giant cells. About 12 months following the implantation of the artificial joints small double refractile particles appear and evoke characteristic morphological changes. The particles are abraded by the continuous friction of the moving alloplastic or metallic surfaces of the prostheses. Usually they are phagozytosed by histiocytes, which form large granulomas and undergo degenerative changes as is indicated by the ultrastructural and histochemical findings. These alterations are more pronounced and occur sooner in prosthesis with parts (rotation ball or cup.) fabricated by polyester than in those made by polyethylene. The abraded particles not only are transported to the inguinal lymphnodes, but also to the tissue between prostheses and bone, where they induce the same morphological changes as in the capsule. Hence the fibrous membrane separating bone and prostheses increases in width, and the spongy bone is partially destroyed by the proliferating histiocytes. It is assumed that by impairing the anchoring this foreign body reaction to the abraded alloplastic particles is the leading cause of the loosening of this kind of artificial joints.

Acid Phosphatase↗