Collateral circulation in internal carotid artery occlusion. A study by duplex scan and magnetic resonance angiography.

Background: Clinical effects of internal carotid artery (ICA) occlusion may range from the absolute absence of symptoms to lethal hemispheric stroke. In this paper symptoms of patients with ICA occlusion have been related to the development of collateral circulation, different types of developed collateral circulation have been assessed, and the degree of sensitivity and specificity of duplex scan has been appraised.

Methods: Forty-eight patients with ICA occlusion or subocclusion, 24 males and 24 females, aged between 50 and 83 years (67.

Microvessel density, mast cell density and thymidine phosphorylase expression in oral squamous carcinoma.

To elucidate the role of angiogenesis in the carcinogenesis and progression of oral cancer, we investigated microvessel density (mVd), mast cell density (mCd) and thymidine phosphorylase (TP) expression in a series of 50 patients with T1-3 N0-1 M0 oral squamous carcinoma (OSC) and 21 patients with non-dysplastic oral leukoplakia (NDOLP). Paraffin-embedded pathological tissue was utilised for the immunohistochemical analysis of mVd and TP expression. Toluidine blue histochemical method was employed for mast cell identification.

A comparison between the heart of young athletes and of young healthy sedentary subjects: a morphometric and morpho-functional study by echo-color-doppler method.

Morphologic and morpho-functional heart differences between healthy young athletes and healthy young subjects who do not practice agonistic sport have been studied using Color Doppler Echography (CDE). Overall, 68 subjects were enrolled in the study (age range: 19-26 yrs). Of them, 34 subjects (17 men and 17 women) were practicing sport agonistically; the 34 controls (17 men and 17 women) did not practice any sport on a regular basis.

[Mandibular metastases from rectal adenocarcinoma: clinical case report and review of the literature].

A case is described of a 57-year-old woman with jaw metastasis from rectal adenocarcinoma who underwent colectomy and ovariectomy for moderately differentiated adenocarcinoma of the large intestine and peritoneal carcinosis. This patient subsequently underwent several cycles of chemoantiblastic therapy although, approximately six months after the initial surgery, a tumefaction of the gingival mucosa was found in the lower right premolar area. Radiography showed this neoformation to be an area of mandibular osteolysis.

Solitary plasmacytoma of bone and extramedullary plasmacytoma: two different nosological entities?

Background: The relationship between solitary plasmacytoma and multiple myeloma is still unclear, but they can be distinguished by their different clinical course. Indicators of disease activity and extension, and of a possible evolution to multiple myeloma, have not been identified as yet.

Methods: Two cases of solitary plasmacytoma are described: one of the mandible and one extramedullary plasmacytoma (EMP) of the rhinopharynx.

Interpretation of CT studies: single-screen workstation versus film alternator.

A prototype single-screen workstation with a 2,048 x 2,560-pixel high-brightness monitor, 0.11-second image display time, and simple ergonomic design was compared to a conventional horizontal film alternator in diagnostic interpretation of chest computed tomography (CT) studies. Four radiologists used either the workstation or film alternator in interpretation of studies obtained in 10 patients.

Slow wave sleep dreaming.

Fifty volunteers slept two nonconsecutive nights in a sleep laboratory under electropolygraphic control. They were awakened for one report per night. Awakenings were made, in counterbalanced order, from slow wave sleep (SWS--stage 3-4 and stage 4) and rapid eye movement (REM) sleep.

Granulocyte function in coronary artery disease.

Granulocytes defend the body against invading microbes by producing a complex armamentarium of toxic substances, such as proteolytic enzymes, oxygen radicals and arachidonic acid metabolites. Under certain circumstances, however, such compounds may be released in the absence of phagocytosable particles, resulting in injury to normal cell and connective tissue degradation. Recent experimental studies have emphasized the potential role of granulocytes in the pathogenesis of myocardial ischemia.

The use of double guidewires through a single vascular sheath for obtaining profunda femoris arterial access: technical note.

We describe a double guidewire/single vascular sheath technique that facilitates dilatation of stenotic lesions within both the superficial femoral and profunda femoris arteries following a single antegrade common femoral arterial puncture. Such a technique prevents inadvertent loss of vascular access during maneuvers to catheterize the profunda femoris artery or the superficial femoral artery. Angioplasty within the superficial femoral artery with simultaneous safety-wire placement within the profunda femoris artery has been described previously, but we present, in this technical note, successful profunda femoral angioplasty with the safety wire within the superficial femoral artery.

[Current diagnostic technics in the prediction of the functional recovery of a urographically silent kidney].

25 patients with a silent kidney, because of obstructive uropathy, have been studied. Authors' aim was to find out some parameters which could be able to predict renal function recovery once the obstruction was removed. 99m Tc DTPA renal scintiscanning, renal ultrasonography, and the study of renal clearances on the urine obtained via a percutaneous nephrostomy were executed.