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Biomedical subjects

W R Seemann

Publications and source records attributed to W R Seemann.

At least 19 recordsLinked to original sources
PubMed2000

[Sneddon syndrome: vasculitis or thrombotic disorder?].

BACKGROUND: Livedo reticularis generalisata (LR) in combination with affection of CNS is referred to as Sneddon's syndrome (SNS). Latest data suggest chronic progressive systemic disorder with occlusion of small and medium sized vessels (e.g., cutis, brain, kidneys, heart, eyes). No conclusive etiology is known, though there are correlations to the antiphospholipid syndrome, systemic secondary vasculitis and coagulopathies. Hereditary and toxic factors seem to play a role in pathogenesis in some cases. CASE REPORT: Diagnostic procedure and clinical course of a 56-year-old woman with dementia and hemiparesis proceeded by LR is reported. MRI-, SPECT- and TCD-findings were congruent with diffuse ischemic lesions of the brain due to affection of small- and medium-sized vessels. Histopathological specimens of the brain, meninges and cutis were non diagnostic. Some laboratory findings suggested vasculitis as an underlying cause. LR improved under immunosuppressive therapy with prednisolone and azathioprin. CONCLUSION: SNS does not seem to be a nosological entity. A differentiation between primary (idiopathic) and secondary SNS is useful for different therapeutical approaches.

Anti-Inflammatory Agents↗
PubMed1986

[Diagnosis and therapy of pseudo-obstruction of the colon].

Pseudo-obstruction of the colon (Ogilvie's syndrome) occurred in 18 patients as an acute abdominal emergency. It was characterized by massive distension of the caecum or the entire colon in the absence of any organic cause. Usually there was an underlying extraintestinal disease. Diagnosis of this entity depends on careful radiological investigation of the abdomen, whereby barium enema reveals the absence of organic obstruction. Increasing distension in untreated patients may lead to spontaneous perforation of the caecum.

Cecal Diseases↗
PubMed1986

A new classification of proximal humeral fractures.

Neer's classification of humeral fractures was proved on 657 patients. This classification enables the radiologist to estimate the risk of avascular necrosis of the head of the humerus. The problematic group is that of four part lesions, which has a 19% incidence of humeral head necrosis. Since in this group minimal osteosynthesis produces better functional results than extensive osteosynthesis, a detailed pre-operative radiological description of the fracture type is necessary in order to spare the patient from extensive surgery which could have unsatisfactory results.

Humans↗
PubMed1985

[Aneurysms of the abdominal aorta: possibilities and limits of sonography].

Sonography has proved successful as an excellent method to diagnose an aneurysm of the abdominal aorta with an accuracy of 98%. Diameter of the aneurysm can be determined via sonography with the same exactitude as with CT. The difficulties arising with sonography concern the exact determination of longitudinal spread. If an aneurysm starts on the level of the hilus of the kidney, the information supplied by sonography on an involvement of the renal arteries is not sufficiently safe, whereas the distal end of the aneurysm can often be determined correctly. The angiogram remains indispensable for assessing adjacent vascular regions in asymptomatic aneurysms. Sonography allows good identification of perforated and penetrating aneurysms. This fact emphasises the value of this method also in acute diagnostics.

Aortic Dissection↗
PubMed1985

[Giant-cell reaction of the short tubular bones of the hand and foot].

Giant cell reactions in the short tubular bones comprise mainly enchondromas, aneurysmal bone cysts and giant cell tumours. In both cases a history of trauma can be related. We therefore agree with Aegerter and Lorenzo that an intra-osseous haematoma due to minor trauma is likely to be of pathogenic significance.

Adolescent↗
PubMed1985

Computed tomographic findings in myogenic gastric tumors.

Computed tomographic findings in leiomyoma, leiomyosarcoma and benign leiomyoblastoma of the stomach are discussed. Gastroscopic biopsy was unsuccessful in every case, but CT was able to show the extragastric extension in all tumors. In one case, gastric leiomyoma and renal hypernephroma occurred simultaneously. Both tumors showed similar contrast medium enhancement, leading to a misdiagnosis.

Aged↗
PubMed1984

Evidence for coronary spasm during flushing in the carcinoid syndrome.

In this report we present the history of a patient with symptomatic carcinoid syndrome. During flushing he suffered from variant angina. The observation of coronary spasm due to excess 5-hydroxytryptamine (5-HT) is discussed with regard to the discharge of 5-HT from clotting platelets in the coronary arteries.

Aged↗
PubMed1984

[Effect of contrast media on glycoside-induced mesenteric ischemia].

Experiments in 12 dogs have shown that intra-arterial injection of hyperosmolar contrast into the superior mesenteric artery normally produces a 52% increase in blood flow lasting more than two minutes. Following digitalis-induced mesenteric ischaemia, vaso-dilatation is equally marked, but lasts two and a half times as long. In view of the prolonged vaso-dilator effect of hyperosmolar contrast, arterial spasm could be missed during angiography.

Angiography↗
PubMed1984

Value of angiography, sonography, and CT in renal infarction.

The value of angiography, sonography, and computed tomography as diagnostic methods for renal infarction is discussed. In all cases the infarct could be demonstrated angiographically, but not by sonography. In the case of a former infarct, the involved area appeared as a tumour mass by sonography and enhanced CT-scan showed contrast enhancement of the mass.

Aged↗
PubMed1984

[Acute abdomen].

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Abdomen, Acute↗
PubMed1984

[Pulmonary fibrosis in histiocytosis X].

This paper reports on a 23-year-old man suffering from pulmonary fibrosis caused by localised histiocytosis X. Although chest film examination shows diffuse pulmonary involvement the patient is asymptomatic. No other organ systems are involved. The different forms and prognosis of histiocytosis X are discussed.

Adult↗