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Biomedical subjects

H J Brambs

Publications and source records attributed to H J Brambs.

At least 145 records · Page 8Linked to original sources

Previously treated, locally recurrent breast cancer: treatment with superselective intraarterial chemotherapy.

PURPOSE: To evaluate the effectiveness of intraarterial infusion chemotherapy (IAC) with mitoxantrone hydrochloride in patients with previously treated, locally recurrent breast cancer. MATERIALS AND METHODS: Thirty-nine women (aged 31-82 years) with recurrent breast cancer underwent superselective IAC (25 mg/m2 mitoxantrone hydrochloride every 24 hours) through the subclavian artery branches after heparin administration. The extent of tumor perfusion was monitored with computed tomography during the intraarterial administration of contrast medium. IAC was repeated one to nine times. Patients had previously undergone radiation therapy (n = 39), surgery (n = 20), or systemic chemotherapy (n = 23). RESULTS: The overall response rate was 77% (n = 30). Eight patients had complete remission. Progression occurred in three patients. Remission was observed in cases of lymph node involvement (n = 9). Seven patients are still undergoing treatment. Side effects were usually moderate. Nine patients died of systemic tumor spread. In 14 patients, distant metastases developed during the first 18 months of treatment. CONCLUSION: IAC is an effective, well-tolerated therapy in patients with locally recurrent breast cancer.

Adult↗

[Results of catheter embolization of renal cell carcinoma].

PURPOSE: We pointed out the value of catheter embolisation of kidney tumours. METHODS AND PATIENTS: We treated 42 patients with kidney tumours. For peripheral embolisation we placed Histoacryl or Ethibloc into the kidney artery via a transfemoral catheter. 33 patients had haematuria. 8 patients were lost for follow up. 26 patients were treated by embolisation alone and 8 patients were treated before nephrectomy. RESULTS: Haematuria was stopped in 98% and never reoccurred. The intraoperative blood-loss was 600 ml on average. 55% of patients treated by embolisation alone died within the first year. 51% of patients suffered from a slight postinfarction syndrome. One patient died of sepsis and one had pulmonary insufficiency due to AV shunt and pulmonary embolism. CONCLUSIONS: Peripheral embolisation of kidney tumours can be used successfully and is minimal invasive, in case of haematuria and pain. The perioperative risk is reduced due to limited blood loss.

Adult↗

[Imaging methods in diagnosis of chronic inflammatory bowel diseases].

In diagnostic imaging of chronic inflammatory bowel diseases, endoscopy and radiologic techniques are used complementarily. For primary evaluation, endoscopy has greater impact, and radiologic techniques are restricted to the assessment of the small bowel. In acute and chronic complications, cross-section methods are superior because extraenteric lesions can be detected precisely. By means of fast sequences and development of gastrointestinal contrast media, magnetic resonance imaging is of increasing value because multiplanar sections can be performed and irradiation risk can be avoided.

Diagnosis, Differential↗

[Alveolar echinococcosis of the liver--computerized tomography findings].

In order to ascertain the typical computed tomographic findings of hepatic alveolar echinococcosis, 24 computed tomograms of 19 patients were evaluated. The liver was involved in all cases whereas the diaphragma was infiltrated in 32%, and the retroperitoneal area in 42%. The right liver lobe was affected in 65%. Both before and after intravenous bolus contrast medium administration, the lesions were mainly inhomogeneous and of low density; a masking of the lesions due to the contrast medium administration was not observed; the enhancement pattern was irregular. Calcifications were detected in 96% of the cases, cystic structures in 50%, and cholestasis in 54%. On the basis of the crucial finding of calcifications in combination with the other typical observations, CT seems to be very suitable for the evaluation of hepatic alveolar echinococcosis.

Adult↗

CT and MR imaging of adrenal hemangioma. A case report.

PURPOSE: Cavernous hemangiomas of the adrenal gland are rare, and we here describe CT and MR features of an additional case including delayed contrast CT. RESULTS: On CT, the tumor appeared as a well-delineated mass. Fatty areas and calcifications were seen. On delayed contrast CT, a progressive enhancement from the periphery to the center of the tumor was noticed, similar to the contrast enhancement of liver hemangiomas. In T1-weighted MR images, a hypointense tumor with a central stellate area of hypointensity was found. The tumor had a predominantly peripheral contrast enhancement. CONCLUSION: CT and MR findings of adrenal hemangiomas are in some cases similar to those of liver hemangiomas. A tumor resection must be considered if the tumor changes in appearance or size.

Adrenal Gland Neoplasms↗

[Percutaneous transhepatic cholangioscopy].

Percutaneous transhepatic cholangioscopy by means of small caliber endoscopes is a relatively safe and reliable technique and may be the optimal approach to the percutaneous evaluation and treatment of a variety of complex biliary tract processes. This technique combines the advantages of an endoscopic and a radiologic approach to the bile ducts. This procedure is rarely indicated to assess a biliary stenosis macroscopically and histologically because less invasive techniques have been developed to obtain histological material. The most frequent indication is the diagnosis, fragmentation and removal of bile duct stones. Small stones can be grasped and removed by means of Dormia-baskets. For the treatment of huge and impacted stones laser energy or electrohydraulic shock waves can be applied under endoscopic control. In selected cases of tumorous obstruction such as tumor ingrowth within implanted metallic stents, a tumor ablation can be performed using laser, electrocoagulation or injection of alcohol or cytostatic drugs.

Biliary Tract Diseases↗

Combined external beam radiotherapy and intraluminal high dose rate brachytherapy on bile duct carcinomas.

PURPOSE: The aim of this study was to investigate the effectiveness and complications of combined external beam and intraluminal high dose rate irradiation and various adjuvant biliary drainage techniques on patients with bile duct carcinomas. METHODS AND MATERIALS: Eighteen patients with carcinomas of the hepatic duct bifurcation and 12 patients with carcinomas of the choledochus duct or the common hepatic duct were treated with combined external beam radiotherapy and intraluminal high-dose rate brachytherapy. Nine patients received radiotherapy after palliative tumor resection and 21 patients were primarily irradiated. Twenty-five patients completed the full course of radiotherapy. On these patients, the reference doses for the external beam varied from 30 to 45 Gy and for brachytherapy from 20 to 45 Gy. Biliary drainage after radiotherapy was achieved either with percutaneous catheters, endoprosthesis, or stents. RESULTS: The median survival for the entire group was 10 months. The actuarial survival was 34% after 1 year, 18% after 2 and 3 years, and 8% after 5 years. The subgroup with palliative tumor resection exhibit a significantly better survival (median: 12.1 months vs. 7.9 months). Three patients are still living without evidence of disease since 35 to 69 months. Major complications like bacterial cholangitis could be lowered from 37% to 28% through exchange of percutaneous transhepatic catheters to endoprosthesis or stents. The longest lasting drainages were achieved through stents. The frequency of radiogenic ulcera were lowered from 23% to presently 7.6% after the total dose of the high dose rate afterloading boost was reduced to 20 Gy. CONCLUSIONS: The present standard treatment schedule 40 Gy for the external beam and 20 Gy (fourfold 5 Gy) for the afterloading boost seems to be appropriate and well tolerated. After radiotherapy, a permanent supply of drainage should be made with a stent.

Adenocarcinoma↗

[Therapeutic bilateral renal artery embolization in the nephrotic syndrome].

Amyloidosis with renal involvement was diagnosed in a 52-year-old man with Crohn's disease for 15 years. A severe nephrotic syndrome developed (proteinuria 40 g daily) with oedema and arterial hypotension (80/60 mm Hg). As adequate substitution treatment was not possible an attempt at medical renal ablation was made with a combination of captopril (25 mg daily), frusemide (80 mg daily) and indomethacin (200 mg daily). The proteinuria decreased to 18 g daily, but serum creatinine concentration rose to 5.8 mg/dl so that chronic haemodialysis had to be undertaken. Yet the patient's clinical state hardly improved and, because of his poor general condition, bilateral nephrectomy was contraindicated. In consequence bilateral catheter embolization of the renal arteries was performed. The urinary protein loss fell at once to 0.5 g daily. Serum protein rose from 3.1 g/dl under substitution to 5.7 g/dl without. During the following six months, while on chronic haemodialysis, the nephrotic syndrome did not recur. However, cardiac involvement in the amyloidosis was demonstrated so that the prognosis is poor. Permanent bilateral embolization of the renal arteries is a feasible method of managing a treatment-resistant nephrotic syndrome in selected patients.

Amyloidosis↗

Pulmonary nodules in spiral volumetric and single slice computed tomography.

Single slice acquisition of conventional CT and volume scanning of spiral volumetric CT are compared in terms of detection and assessment of pulmonary nodules. Spiral CT is supposed to be superior to conventional CT in detecting all lung nodules by scanning the complete lung volume, while conventional CT may miss nodules due to inconsistent levels of inspiration for single slices. Different technical procedures of spiral CT may change the imaging of nodules and other findings. Fifty-two patients with known or suspected lung nodules were examined by conventional CT and spiral CT. Number and size of lung nodules and imaging of other pulmonary findings were registered independently by two radiologists. Spiral CT showed 15 lung nodules not seen on conventional CT, and missed one nodule. Spiral CT imaging of nodules was superior in some cases (characterisation of benign nodules) because complete scanning provided more information than conventional CT. It was worse in some cases (small nodules, fibrosis, small pleural effusion) due to the greater partial volume effect and less mAs. Technically improved spiral CT with longer scanning facilities and a 180-degree algorithm may be able to replace conventional CT for this indication.

Humans↗

[The chemoembolization of hepatocellular carcinoma: the computed tomographic findings and clinical results in prospective repetitive therapy].

Between April 1989 and March 1993 162 transarterial chemoembolizations (TACE) were performed repeatedly (mean interval: 2.9 months) in 52 patients with hepatocellular carcinoma (HCC): An emulsion of Lipiodol and epirubicin was injected as selectively as possible in a dosage proportional to liver function and tumour size. Before and after each TACE the size of tumours and ratio of tumour volume containing Lipiodol (RTVCL) were determined in CT and the grade of tumour vascularisation was assessed angiographically. The RTVCL increased from 58% after the first treatment to 73% after the third treatment. RTVCL and Lipiodol retention were higher in responders than in non-responders. Tumours with expansive growth pattern showed a higher response rate (56%) than infiltrating tumours (20%). Mean survival of these patients was different (19 and 8 months; p < 0.01), respectively. Survival rates of all patients were 54, 22, and 11% after 1, 2 and 3 years, respectively. Repeated TACE shows local effectiveness. Three treatments during a period of one year are recommended for patients with Child-Pugh class A cirrhosis.

Adult↗

Incidental finding of a hepatic lesion: differential diagnostic problems for fibrolamellar hepatic carcinoma.

We report the case of a 39-yr-old female with a liver lesion that was incidentally detected by ultrasound. Examination of biopsy specimens revealed focal nodular hyperplasia. A metastatic tumor in the right os ilium developed in the following weeks and showed specific uptake of 99mTc-hepatic 2,6-dimethyliminodiacetic acid (HIDA), suggesting metastasis from a differentiated hepatocellular carcinoma. The final pathologic diagnosis was multifocal, solid and glandular hepatocellular carcinoma, partly differentiated as fibrolamellar carcinoma, and an osseous metastasis from the differentiated hepatocellular carcinoma.

Adult↗