Biomedical subjects

H van Ackeren

Publications and source records attributed to H van Ackeren.

12 recordsLinked to original sources

PubMed1990

[Modern cancer therapy--an interdisciplinary task].

The diagnosis of cancer and the treatment of cancer patients are initially an interdisciplinary entity. Progress has been achieved through oncological multimodal cooperation between various forms of organisations. The ensuing problems confirm the following two main points. (1) The continuing delay in diagnosis of cancer still prevents most patients from benefitting from the implementation of optimal therapeutic possibilities and interdisciplinary cooperation. (2) What the surgeon does not achieve or neglects during the primary operation cannot be compensated for through conservative oncological measures.

Aftercare↗

PubMed1987

Microvascular architecture of the mucosa of the gastric corpus in man.

Vascular casts of human gastric mucosa of the corpus area were studied by scanning electron microscopy and compared with vertical and horizontal series of semithin sections of perfusion-fixed corpus mucosa. The submucosal arteries give off short and long arterioles. The short arterioles branch into a basal capillary network reaching from the basis to the isthmus of the gastric glands. The long arterioles pass through the lamina propria without ramifications and supply a second, apical capillary layer reaching from the base to the top of the gastric pits. Anastomoses connect both capillary layers. Dense, convoluted capillaries at the mucosal surface encircle the gastric pits. Both capillary layers drain into venules at the level of the gastric pits. Below, on their way to the submucosal plexus, the venules do not receive any further capillary tributaries. In the examined tissue no arteriovenous anastomoses could be identified. A microvascular architecture with two capillary layers is presented, which guarantees a luxurious oxygenation throughout all layers of the gastric corpus mucosa in man. These findings are in contrast to previous descriptions of human corpus mucosa, where only one capillary layer, reaching from the base to the top of the corpus mucosa, has been identified.

Adult↗

PubMed1984

[CA 12-5 in cancer of the digestive tract. A comparison with CA 19-9 and CEA in cancer of the pancreas and colon].

In 42 control subjects and 134 patients with benign or malignant disease of the pancreas or large intestine, the recently produced tumour-associated antigen CA 12-5 was determined together with CEA and CA 19-9. Only 4% of controls and patients with benign disease (except those with acute pancreatitis) had CA 12-5 values above 35 U/ml, compared with 60% of patients with pancreas carcinoma and 21% with colon carcinoma. For the former (pancreas carcinoma) there was also a good correlation to stage of tumour (0 of 6 tumours stage TxN0M0, 7 of 11 TxN1M0, 16 of 20 TxN1M1 greater than 35 U/ml) and progression of the malignancy. Simultaneous determination of all three antigens increased the rate of tumour-marker positive patients from 87% (CA 19-9) to 92% for pancreas carcinoma and from 25% (CEA) to 51% for colon carcinoma.

Acute Disease↗

PubMed1978

[Principles of radical surgery of gastric carcinoma (author's transl)].

For over a decade, therapeutic results in cases of macrocarcinoma have remained almost constant. The absolute 5-year survival rate is 10-15%. However, in cases of early detection, the 5-year survival rate is over 90%. Systematic screening to detect the cancers early has resulted. The practical results is the systematic observation of high-risk groups. The therapy of choice for macrocarcinoma and cancer that is detected early is subtotal resection. Resection of the cardia should be replaced by gastrectomy, which should also be performed only when defined diagnostic criteria are met.

Gastrectomy↗

PubMed1974