Comparison of conventional versus computer-navigated acetabular component insertion.

This retrospective study compared the efficacy of computer navigation and conventional freehand techniques to place acetabular component orientation in the target position of acetabular cup inclination of 45 degrees and anteversion of 20 degrees . We selected 69 patients who had undergone total hip arthroplasty with freehand cup insertion who had computed tomography (CT) to plan for acetabular cup placement of the contralateral side. This group was compared with 98 patients who underwent CT-based cup insertion, and all had postoperative CT.

Synovial osteochondromatosis in a 9-year-old girl: clinical and histopathological appearance.

This article reports the clinical and histopathological appearance of synovial osteochondromatosis in the right knee joint of a 9-year-old girl. Initial symptoms such as monoarticular joint swelling led to further diagnostic procedures with the aid of different imaging techniques including X-ray examination and MRI. The definitive diagnosis was based on histopathological findings after performing arthroscopy of the affected joint and the intraoperative appearance of the synovial lesions.

[Computer-assisted navigated cup placement in primary and secondary dysplastic hips].

Aim: The positioning of an acetabular implant has great influence on the range of motion as well as the charger of dislocation of total hip arthroplasty. Using modern CAS systems the reproduction of the cup position after three-dimensional planning based on computed tomography is possible. We investigated the reliability of the position of the acetabular implant in primary and secondary dysplastic cases.

[Sonography and scintigraphy in the diagnosis of cystadenolymphomas (warthin tumor)].

Background: Is scintigraphy in the preoperative diagnosis of cystadenolymphomas dispensable?

Patients And Methods: In this prospective study 35 patients with tumors of the parotid gland were examined sonographically and scintigraphycally and the results were compared with the histological findings.

Results: By means of sonography 88 % (22/25) of the cystadenolymphomas were correctly diagnosed and by means of scintigraphy 80 % (20/25).

Conclusions: Sonography is recommendable as the first-line diagnostic procedure in cystadenolymphomas because it is without radiation load, the free choice of the echographic plane, and it can be repeated as often as desired.

[Value of B-image ultrasound in diagnosis of paranasal sinus diseases in comparison with computerized tomography].

Background: In diagnostic imaging of the paranasal sinuses, the A-mode technique is increasingly being substituted by B-mode ultrasonography. To assess the value of B-mode sonography we compared in a double-blind study computed tomography with our ultrasound findings.

Patients And Methods: Seventy-eight patients were examined by CT and subsequently by ultrasound, two-thirds before endonasal surgery and one-third for diagnosis of serious facial pain and swelling.

Stasis papillomatosis. Clinical features, etiopathogenesis and radiological findings.

Stasis papillomatosis can be divided into localized and widespread forms. Ten patients with this disease are discussed with emphasis on their clinical and lymphoradiological findings. Using isotope lymphography we were able to find an overall lymphostasis in only four patients.

[Angioarchitecture of the ileum and colon in Crohn disease].

Vascular changes in resected bowels of Crohn's disease were examined angiographically, microangiographically, micro-preparatorily and histologically. The proper angioarchitecture of the small and the large bowel is being destroyed in the course of the ongoing inflammatory process. Dilated capillaries, destruction of the primary angioarchitecture and its replacement by an irregular, partially bizarre pattern of scar vessels with bundling of the unchanged Vasa recta as varying vessel diameters caused by obliterating secondary fibroses can be seen in advanced Crohn's disease.

[Tumor form of lymphostatic papillomatosis of the skin].

The case of a patient with two plantar papillomatous tumours that had had a relapsing course over 10 years is presented. The tumours were located on the right forefoot and the left great toe. Several operations were performed for different diagnoses, i.

[Detection of lymph vessel changes in venous diseases of the leg using imaging procedures].

Chronic venous insufficiency reveals both functional correlations with the lymphatic system of the limbs as well as pathological-anatomical. The functional correlation initially consists in an enhancement of function as a manifestation of a compensation mechanism of lymphatic drainage in relation to the insufficient venous system. Finally, if the lymphatics are themselves damaged in their further course, a safety valve insufficiency occurs with resulting lymphostasis.

[Isotype lymphography findings in sclerotherapy, varicose exeresis and excision of autologous venous transplants for arterial reconstructions].

In an isotope lymphography study on 24 patients (38 legs), the influence of complete sclerosation therapy of trunk varicosis of the great and small saphenous veins according to Tournay is examined before and, on average, four weeks after treatment. The isotope lymphography parameter was defined as the ratio of the outflow from the foot to the influx to the groin area (quotient Q). The results showed no significant change in Q after treatment compared with the starting values.

[Multiple lipomas of the colon. Case report with clinical, roentgenologic, angiographic and histologic findings].

Case report on a 26 year old woman with multiple lipomas of the colon and rectum and a neurofibromatosis simultaneously. Description and discussion of clinical data and differential diagnosis. The vascularisation of the lipomas and of the overlying mucosa was proved to be good angiographically.

[Sonography of the neck--indications and value].

The anatomical structures of the neck as shown by ultrasound are described. The B-scan technique is of primary importance for evaluation of the thyroid gland and the major salivary glands too. B-scan ultrasound is the premier method of diagnosis of thyroid gland disease.

[Lymphoscintigraphic studies of regional lymph vessels in patients with head and neck tumors].

Lymphatic drainage was followed with Tc lymphoscintigraphy. Micrometastases in head and neck cancer cases cannot be detected. The drainage pattern is highly variable and does not allow prognostic conclusions in tumors as demonstrated for the parasternal pathways.

[Pulmonary microlithiasis following iodine lipiodol lymphography?].

Pulmonary fibrosis with marked calcifications in an 83 year old female patient is reported. Following previously inconspicuous thoracic x-ray findings (1975 and 1978) a bipedal oil lymphography was carried out for diagnosis of a systemic malignant lymphoma. The calcifying pulmonary fibrosis was investigated with the help of tomography, computed tomography, xeroradiography and scintigraphy of the lung and the skeletal system as well as magnetic resonance imaging.

Relationship between the venoconstrictor activity of dihydroergotamine and its pharmacokinetics during acute and chronic oral dosing.

In a double-blind, interindividual comparative study 30 healthy volunteers were randomly allocated to oral treatment with 5 or 10 mg of dihydroergotamine (DHE) or placebo once daily for 16 days. Regional basic venous blood volume (BBV), pressure dependent venous capacitance (CV) of the calf, resting heart rate and blood pressure were determined on Days 1 and 15 of treatment. Plasma concentrations of DHE were monitored on Days 2 and 16.

An autoradiographic study of bone grafts in small animals.

Bone remodelling was studied in allografts and isografts by means of autoradiography. Collagen and proteoglycans of the organic bone matrix were labelled with H-3 amino acids and S-35 sodium sulphate. The principles of primary bone formation are followed in graft remodelling as well.

[Studies on the angioarchitecture of polypoid colonic processes].

Portions of the colon removed at operation were studied angiographically after arterial or venous injection with a barium-gelatin mixture. The aims of the investigation were: To study the differences between tumour and inflammatory angiographic appearances and the clinical value of in vivo angiography of the mesenteric arteries. A comparison of the micro-angiographic appearances of benign and malignant polypoid lesions of the colon.

Advanced periampullary carcinoma: endoscopic palliation by sphincterotomy.

We have described a 50-year-old woman with periampullary carcinoma with extensive infiltration of the duodenal wall arising from advanced tumor of the pancreatic head. Endoscopic sphincterotomy induced complete relief from jaundice and pruritus before definitive surgical therapy was done. This procedure should not be restricted to small tumors confined to the ampulla itself, since it may also be of palliative or preoperative value in certain patients with advanced cancer of the pancreatic head.

[Value of isotope diagnosis in diseases of the ENT area. Status, development and trends].

The nuclear medical diagnostic procedures listed in this article demonstrate the continual change in the significance of modern and recent techniques. The definition of the current status may be as short-lived as some radioisotopes. The tendencies are determined by aspects of radiological hygiene and the development of new technical procedures and the preference of in-vitro-examinations over in-vivo-diagnostic.

[Appearance of fresh vertebral body fractures on the bone scintigram].

Based on observations on 27 patients technetium-99m-diphosphonate scintigram is recommended as two-stage-investigation. During the first 12 hours no activity and up to 48 hours only slight activity can be seen in contrast to a marked take-up of the tracer after 6 to 8 days. This enables a timing of the fracture, which can be of importance in compensation and legal disputes.

[Intratympanic course of the internal carotid artery as an accidental finding of ear surgery and as a roentgen diagnostic problem].

The rare anomaly of an intratympanic course of the internal carotid artery is, like the equally rare aneurysm of this artery, a differential diagnosis of tumours of the middle ear. A biopsy would lead to obvious complications. Petrous bone tomography, even using the most modern spiral type of movement, is of limited value because of the difficulty in interpretation and plays little part in the diagnosis as compared with arteriography.

[Differential diagnosis of glomus tumor].

The carotid artery and the jugular bulb can protrude into the middle ear, representing a chance finding during middle ear surgery. Since these vascular abnormalities do not require surgical treatment and incisions are dangerous, it will be necessary to differentiate between such conditions and Glomus tumours. Hence, preliminary diagnosis by angiography is a "must".

[Paranasal sinusitis in children].

Sinus x-rays were taken of all children admitted for surgery to the ENT Department of Bochum for one year. 43.9% of 273 children and 29% of 14 healthy control children showed opacities of the maxillary sinuses.

[Diagnostic problems posed by acute inflammatory exacerbations of lymphoedema. Isotopic methods of investigation (author's transl)].

With the help of isotope examination methods as isotope angiography, -phlebography, particle-scintigraphy and isotope lymphography it is possible to differ the oedemaproductive component, i.e. the increase of perfusion in the inflammation area and the lymphostatic oedema.

[Micromorphological and clinical aspects of angiodysplasias].

As is known, 1900 Klippel and Trenaunay summarized naevus teleangiectatisuc lateralis, vein ectasias and isolated gigantism to a triad. Seven years later Weber described the same syndrom adding the symptom of arterio-venous fistulas, that he clinically diagnosed. Some authors deduce from this symptomatology two syndroms ; on one hand the Klippel and Trenaunay syndrom and on the other the P.