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Biomedical subjects

S N Hassani

Publications and source records attributed to S N Hassani.

12 recordsLinked to original sources
PubMed1988

Emergency computerized tomography of tracheoesophageal fistula in lung adenocarcinoma.

Malignant tracheoesophageal fistula occurs infrequently in patients with irradiated esophageal and lung cancer, uncommonly in patients with untreated mediastinal malignancies, infection, or trauma, and rarely in primary adenocarcinoma of the lung. The natural progression of this entity leads to rapid deterioration and death from overwhelming pulmonary infection.Definitive treatment depends on the demonstration and localization of the fistula. Computerized tomography (CT) chest scanning with dilute oral contrast is the ideal means of identification of the fistula. CT scanning without contrast may outline sufficiently the pathology to avoid the usage and side effects of contrast media in the lungs.A review of one case of tracheoesophageal fistula due to pulmonary adenocarcinoma is presented where emergency CT scanning without contrast resulted in rapid and accurate diagnosis, leading to prompt and appropriate management.

Adenocarcinoma↗
PubMed1981

Ultrasonic patterns of uterine fibroids.

The classic appearance of the echo-poor fibroid uterus occurs in less than one-third of leiomyomata uteri. The ongoing manifestations of the various types of internal degeneration produce a picture of diffuse or focal medium-amplitude internal echoes with increased through transmission. Calcification of fibroids results in irregular high-amplitude echoes or a ringlike echo pattern which must not be mistaken for a fetal head. The combination of wide dynamic range, gray scale scanning, and high-resolution real-time sonography optimizes the diagnosis of the fibroid uterus.

Female↗
PubMed1980

High-resolution breast ultrasonography.

Recent improvements in ultrasonic-scanning now permit solid tumors in the breast as small as 5 mm and cystic lesions of 2mm in size to be detected. The overall accuracy of diagnostic ultrasound is very high, and as more experience is gained by application of newer high-resolution systems this accuracy will improve even further. In certain cases, ultrasonography can detect lesions completely missed by clinical palpation. In some areas such as cystic lesions this modality is far superior to the mammograph and in other situations it complements other diagnostic procedures. Areas of microcalcification may be localized. Cystic lesions of the breast are not easily diagnosed with great accuracy. In our extensive experience over the past 4 years, fibroadenomas generally appear as sharply marginated spherical or lobulated masses with an echopoor center and high through transmission. Carcinoma tends to attenuate sound energy highly and frequently produces a characteristic echo pattern. Fibrous dysplasia appears as a highly echogenic zone which is readily distinguished from other entities. Contact ultrasonography is used to localize the lesion three-dimensionally within the breast for biopsy purposes and to detect the presence of distant metastases.

Breast↗
PubMed1979

Fibroleiomyomatous hamartoma of the lung.

Fibroleiomyomatous hamartoma of the lung is an extremely rare, nonneoplastic overgrowth of pulmonary muscle tissue which can be found in various sites throughout the lung. Several cases have been previously described. The case presently reviewed demonstrates the multinodular form of this entity. Fibroleiomyomatous hamartoma may also appear as a solitary coin lesion or as a diffuse interstitial pattern on chest radiographs.

Female↗
PubMed1978

Real time ophthalmic ultrasonography.

Material from three years of experience with a real time contact ophthalmic scanner is presented. Routine screening of patients with cataracts revealed unsuspected retinal detachments and advanced vitreous hemorrhage in a significant percentage. Foreign bodies near the posterior ocular wall were optimally evaluated by both radiographic and ultrasonic localization methods to avoid the inherent error of the x-ray triangulation system. The traumatized eye may be effectively studied for internal damage by using a thick layer of methyl cellulose without putting pressure on the globe. Many types of vitreous and retinal pathology may be confirmed or better evaluated by this simple, noninvasive technique.

Cataract↗
PubMed1978

Demonstration of pericardial effusion by real-time ultrasonography.

Pericardial effusion has a variety of causes. Among these, inflammatory processes are the most common. Traditionally x-rays, isotopic scanning, carbon dioxide injection, and M-mode echocardiography have been used for evaluation of pericardial effusion. The most recent advance in real time scanning enables the examiner to more completely and more accurately evaluate and serially investigate pericardial effusions through a noninvasive technique.

Echocardiography↗