[Leiomyosarcoma of the small intestine. Contribution of computerized tomography to its diagnosis]. / Leiomiosarcoma del intestino delbado. Contribudión de la tomografía computada para su diagnóstico.

The case of a patient with a small bowel leiomyosarcoma in whom a correct preoperative diagnosis was done due to important clues provided by computed tomography is presented. We present these findings, and suggest that this new exploratory method may be useful for the study of patients with small bowel intramural tumors, in whom other studies are often non-conclusive.

Leiomiosarcoma del intestino delgado.Contribucion de la tomografia computada para su diagnostico. / Leiomyosarcoma of the small bowel. Contribution to the computed tomography for its diagnosis

Se presenta el caso de una paciente con un leiomiosarcoma del intestino delgado, en la cual se logro un diagnostico preoperatorio correcto gracias a los datos aportados por la tomografia computada. Se analizan estos hallazgos y se sugiere que este nuevo metodo diagnostico puede ser muy util para el estudio de pacientes con tumores intramurales del intestino delgado en los cuales otros estudios usualmente no son concluyentes

[Evaluation of multiple myeloma with bone scintigraphy using Tc 99 diphosphonate. Review of the literature]. / Evaluación del mieloma multiple con cintilografía ósea usando 99mTc-diphosphonate. Revisión de la literatura

Bone Scanning using 99m Tc-Diphosphonate is another diagnostic modality in the evaluation of multiple mieloma which allows the identification of bone lesions not demonstrable by conventional radiography. The use of 99m Tc-Diphosphonate is more convenient and less harmful than other radioactive isotopes utilized before.

Computed tomography of tumors of the pineal region.

Eight pathologically proven cases of pineal region tumors examined by computed tomography (CT) were found upon reviewing 11,000 consecutive CT studies at the Massachusetts General Hospital. The CT scan findings of the eight cases are described and related to a pathological classification of pineal tumors.

Dural arteriovenous malformation associated with subdural and intracerebral hematoma: a CT scan and angiographic correlation.

Computed tomography of a case of hemorrhage from a dural arteriovenous malformation depicts an occipital varix with dilated venous channels, an intracerebral hematoma, a subdural hematoma and a subfacial hernation. The angiographic and surgical findings are described.

A review of the findings on computed cranial tomography following intravenous contrast media.

The diagnostic contribution of contrast enhancement by intravenous injection of meglumine diatrizoate was assessed in 121 patients who received both plain and contrast enhanced cranial CT scans. The use of contrast enhancement was found to provide both an increased sensitivity in detection of lesions and some improvement in pathological differentiation of lesions. The use of contrast enhancement in addition to plain CT scans increases the reliability of CT scans in excluding such conditions as neoplasms, abscesses, and vascular malformations. Because the use of contrast medium is associated with morbidity (and significantly extends the length of the total study), the decision to employ contrast enhancement must be based upon a careful evaluation of the clinical, other radiological, and plain CT findings in the individual patient.

Cerebral angiography in acute cerebral infarction.

Cerebral angiography in the acute phase of clinically diagnosed stroke syndromes was evaluated in a prospective study of 104 consecutive patients over an eight month period at the Massachusetts General Hospital to determine the diagnostic yield. Of 68 patients subsequently documented to have retinal or cerebral hemispheric infarction, 63 (92.6%) had angiographic demonstration of occlusive lesions which appeared to correlate with the clinical deficit. These results are discordant with prior angiographic reports, 2,17,18,20 suggesting that delayed carotid artery angiography fails to show occlusive lesions (embolic) which may be shown acutely.

Clinical concepts of contrast enhancement in computed cranial tomography.

Infusion of intravenous contrast medium with computed cranial tomography must be utilized judiciously. It is indicated to improve the detectability of lesions and to assist in differntial diagnosis.

Evaluation of intracranial aneurysms by computed tomography.

Useful information has been gained by review of eight cases of intracranial aneurysm demonstrated by computed tomography (CT) and correlation with cerebral angiograms. The angiograms demonstrated one or multiple aneurysms, the precise location of the aneurysm, and presence of arterial spasm. The CT scan can delineate the full size of the aneurysm when the sac has been partially obliterated by thrombus, the presence of hematoma, infarction, hydrocephalus, and intraventricular and subarachnoid hemorrhage. These associated features are more difficult to evaluate by angiography alone.

Theoretical considerations in the use of contrast media for computed cranial tomography.

The impressive results obtained by the use of iodinated contrast media, particularly when administered by drip infusion technique, led us to investigate the advantages and disadvantages of the method. An originally non-invasive examination has progressively evolved into a quasiinvasive examination in the majority of cases, and our results appear to justify such a trend.