Search PubMed⌕ Search

Biomedical subjects

I Kazem

Publications and source records attributed to I Kazem.

At least 37 records · Page 2Linked to original sources
PubMed1981

Adrenal scintigraphy in primary aldosteronism. Improved visualization after long-term pre-treatment with dexamethasone.

Dexamethasone-modified adrenal scintigrams were performed on 13 patients with an aldosterone-producing adenoma and on one patient with an aldosterone-producing carcinoma. Adrenal scintigrams using 131I-19-Iodocholesterol were obtained after short pre-treatment with dexamethasone, while 131I-6 beta-Iodomethyl-19-Nor-Cholesterol scintigrams were performed after long-term pre-treatment with dexamethasone during 9-21 days. Using the former procedure the adrenal scintigrams correctly identified the adenoma in 3 of 8 patients, while with the latter procedure the adrenal scintigrams localized the adenomas in 8 out of 9 patients, including 3 patients in whom the former procedure had failed. The adrenal carcinoma was not visualized with 131I-6 beta-Iodomethyl-19-Nor-Cholesterol. Thus, the sensitivity of 131I-19-Iodocholesterol scintigrams to detect aldosterone-producing adenomas was only 37.5%. Uptake of radioactivity in the normal contralateral adrenal gland accounted for the low detection rate. On the other hand, the 131I-6 beta-Iodomethyl-19-Nor-Cholesterol scintigrams, performed after long-term pre-treatment with dexamethasone, had a sensitivity of 89%. It is suggested that long-term pre-treatment with dexamethasone contributed to the improved sensitivity by a more effective suppression of radioactivity uptake in the normal adrenal gland.

19-Iodocholesterol↗
PubMed1980

Age and mortality in laryngeal cancer.

A sample of 371 patients with squamous cell carcinoma of the larynx treated over a 17-year period has been statistically analysed. Age is shown to be an important prognostic parameter. Apart from the well-established additional risk factors, such as fixed cord, extension of the tumour beyond the larynx, fixed lymph nodes, distant metastasis and other malignancies, age by itself seems to be a crucial factor. A significant correlation exists between the age of the patient on admission and the chance of death from tumour within the first 3 years after treatment. In older patients survival is significantly lower and shorter than in younger patients.

Adult↗
PubMed1980

The effect of repeated injections of 99mTc-antimony-sulphide colloid on the RES of the rat--histopathologic study.

Experiments on inbred albino rats were performed to test the effect of repeated administrations of 99mTc-antimony sulphide colloid on the integrity of the RES. Experiments were carried out in two batches, one with the preformed colloid given in increasing doses, and the other with the labelled colloid in increasing doses. In all, 9 groups of animals including a control group were tested. Studies included: organ weights of liver, spleen, lungs and kidneys, histopathology, contact macroautoradiography, microautoradiography and 99mTc activity distribution in organs. Results showed no macroscopic or microscopic evidence of tissue damage after repeated injections up to a total dose of 18 mCi 99mTc, 142.2 mg PVP, and 693 microgram Sb, given in 9 equivalent doses at one week intervals. It is concluded that repeated administrations of 99mTc-antimony sulphide colloid for liver scintigraphy are safe.

Animals↗
PubMed1976

Strontium 87mSr bone scanning for the evaluation of total hip replacement.

In a series of seventeen patients with unilateral osteoarthritis of the hip a scintiscanning follow-up study was made before and after total hip replacement for the assessment of the normal course of the 87mSr-scintiscan. In another series of twenty-eight patients with total hip replacement a photoscan was made as a supplement for the diagnosis of loosening of one or both components of a total hip implant. In most of these cases it proved to be a useful method, especially when clinical and raidological examination was inconclusive. It is concluded that up to six months after operation increased osteoblastic activity exists; the scintiscan became normal after that time. 87mSr scintiscanning offers a safe and simple technique for the assessment of the success and stability of total hip arthroplasty. It is also a useful aid for the early detection of loosening and infection. The procedure can help in the differential diagnosis of complaints after total hip replacement.

Arthroplasty↗
PubMed1975

[Glomus tumors].

Explore the source record for details and available documents.

Adult↗
PubMed1975

Palliative irradiation for liver metastases.

Eleven patients underwent palliative irradiation for symptomatic liver metastases. The whole liver is included in the radiation field. The treatment is given with a cobalt teletherapy unit. Daily doses are 150 rads calculated in the midliver plane. The total dose employed is 2,500 rads given in a three-week period. Eight patients had good response, two moderate response, and one patient failed to respond to treatment. Liver function studies and liver scans also reflected the treatment response. All patients tolerated the treatment and no deaths were attributed to liver irradiation. The impression is that radiation therapy is valuable for the treatment of symptomatic liver metastases in the young patient who does not have a terminal condition.

Adolescent↗
PubMed1975

Pre-operative short intensive radiation therapy of T3-T4 laryngeal carcinoma.

A group of 33 patients with T3-T4 laryngeal carcinomas received in the period 1968 to 1972 pre-operative irradiation with 60Co followed by surgery. A total dose of 2 500 rad was given in 5 equal sesssions. The tumour free survival rates of these patients are compared to those of a comparable group of 57 patients receiving radiation therapy only. The overall results in the pre-operative group (64%) are superior to those in the group irradiated only. In glottic tumours the results were similar in both groups, but significantly superior in supraglottic tumours receiving pre-operative radiation therapy. The treatment schedule proposed is well-tolerated and surgery is usually performed before the onset of reaction.

Cobalt Radioisotopes↗
PubMed1975

Total body irradiation in the management of malignant lymphoma.

A pilot study for the evaluation of fractionated total body irradiation in the management of disseminated lymphomas is reported. Nine patients were treated in the period February - August, 1973. A telecobalt unit with treatment distance of 328 cm was used. Daily fractions of 15 rad total body dose measured in the midpelvic plane were given for the first 5 days. Thereafter a dose of 10--15 rad per session was given every other day or at longer intervals depending on the leukocyte and thrombocyte count. The total dose for a full course varied between 200 and 265 rad in 5--12 weeks. The results of the study demonstrate the value of total body irradiation in the treatment of patients with stage III lymphosarcoma, and potentially in the management of disseminated mycosis fungoidis.

Aged↗