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Intestinal interposition : the prevalence and clinical relevance of non-hepatodiaphragmatic conditions (nonChilaiditi forms) documented by CT and review of the literature [Interposizione intestinale : prevalenza e impatto clinico delle condizioni non epatodiaframmatiche (non-Chilaiditi) documentate con TC e revisione della letteratura]
No full textRiassunto
Obiettivo. Scopo del nostro lavoro è stato valutare la
prevalenza e l’impatto clinico delle forme di interposizione
intestinale non epatodiaframmatiche in una popolazione
adulta studiata con tomografi a computerizzata (TC) per
differenti indicazioni medico-chirurgiche.
Materiali e metodi. Da novembre 2008 ad aprile 2009,
due autori hanno valutato insieme i casi di interposizione
intestinale su 4338 pazienti adulti sottoposti a indagini TC.
In tale studio, sono state evidenziate sia interposizioni di
tipo epatodiaframmatico, che sono state defi nite Chilaiditi
come da letteratura, sia altri tipi di interposizione defi nite
secondo i diversi rapporti anatomici: splenorenale,
retrogastrica, epatocavale, retrosplenica e retrorenale, che
sono state raggruppate sotto il termine non-Chilaiditi. È
stato successivamente sottoposto ai pazienti dei due gruppi
e ad un gruppo controllo un questionario relativo ai
disturbi clinici associati più frequentemente alla sindrome
di Chilaiditi. Sono stati quindi comparati i dati clinici
relativi ai tre gruppi.
Risultati. Su 4338 pazienti sono stati osservati 130 (3%)
pazienti con interposizione colica per un totale di 143
manifestazioni, 90 Chilaiditi e 53 non-Chilaiditi: 30
interposizioni di tipo splenorenale, 12 di tipo retrogastrico,
5 epatocavale, 4 retrosplenico e 2 retrorenale. L’analisi
statistica ha evidenziato che le forme di Chilaiditi
producono una maggiore sintomatologia (24,4%), seguite
dalle forme non-Chilaiditi (18,9%) e infi ne dai casi controllo (10,8%). Tale analisi è stata validata dal test di
signifi catività χ2.
Conclusioni. Le forme non-Chilaiditi hanno rappresentato
più della metà delle forme Chilaiditi, con la manifestazione
splenorenale di gran lunga la più frequente. Abbiamo
inoltre evidenziato che anche le forme non-Chilaiditi sono
statisticamente più sintomatiche dei casi controllo.PURPOSE:
This study was done to assess the prevalence and clinical impact of non-hepatodiaphragmatic interpositions in a sample of adult patients undergoing computed tomography (CT) for a variety of medical reasons.
MATERIALS AND METHODS:
From November 2008 to April 2009, two observers jointly examined the cases of intestinal interposition in 4,338 adults undergoing CT investigations. This study sought to identify not only hepatodiaphragmatic intestinal interpositions, defined as Chilaiditi, but also other forms of intestinal interposition, which we termed non-Chilaiditi. The latter were divided into five different classes on the basis of their anatomical relationships: splenorenal, retrogastric, hepatocaval, retrosplenic, and retrorenal. Moreover, a questionnaire investigating the clinical symptoms reported to be associated with Chilaiditi syndrome was given to patients exhibiting any form of intestinal interposition and to a control sample. Finally, clinical data related to the three groups were compared.
RESULTS:
Of the 4,338 patients examined, 130 (3%) were found to have intestinal interposition, for a total of 143 forms: 90 Chilaiditi and 53 non-Chilaiditi. Of the latter, 30 were splenorenal, 12 retrogastric, five hepatocaval, four retrosplenic and two retrorenal. Statistical analysis showed that the Chilaiditi group suffered most symptoms (24.4%), followed by the non-Chilaiditi group (18.9%) and control cases (10.8%). Our results were validated using the χ(2) test of significance.
CONCLUSIONS:
The number of non-Chilaiditi cases amounted to just over half the number of Chilaiditi cases, with the splenorenal form being by far the most frequent. Statistical analysis showed that patients with non-Chilaiditi forms of intestinal interposition had more symptoms than did controls
The current role of radiologic and endoscopic imaging in the diagnosis and follow-up of colonic diverticular disease
No full textOBJECTIVE. Colonic diverticular disease is among the most prevalent conditions in Western society and is a common cause for outpatient visits and hospitalizations. The role of imaging is in evolution, but it has proven useful in confirming clinically suspected disease, assessing severity and complications, and directing patient management. CONCLUSION. This review focuses on the current role of radiologic and endoscopic imaging in distinct clinical scenarios of diverticular disease, with emphasis on diverticulitis and its follow-up
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Unknown internal carotid artery atherosclerotic stenoses detected with biphasic multidetector computed tomography for head and neck cancer
No full textThe possibility of detecting unknown internal carotid artery stenoses in patients undergoing biphasic multidetector computed tomography (MDCT) for current or previous head and neck cancer was investigated in 52 patients who underwent four-row MDCT (4 mmx1.25 mm collimation, pitch 3, kVp 120, mAs 140; 90-100 ml of non-ionic contrast agent at 2 ml/s, early and late phases). Vessel stenoses were classed as severe (70-99%), moderate (30-69%), or mild (<30%). Internal carotid arteries (ICAs) with vessel stenosis was found in 37 patients (age 67.0+/-9.8 years, median 69 years) and 67 ICAs. Four patients (age 65.5+/-9.7 years) had severe stenosis, all of them associated with contralateral moderate stenosis. Seventeen patients (age 70.35+/-9.78 years) had moderate stenosis, bilateral (n=7), associated with contralateral mild stenosis (n=8), unilateral (n=2). Sixteen patients (age 64.8+/-9.8 years) had mild stenosis, bilateral (n=10) or unilateral (n=6). Of the four patients with unknown MDCT-detected severe stenosis, three had a change of therapy: one endarterectomy before tumor surgery, one combined vascular and tumor surgery, and one patient with a previously treated hypopharyngeal cancer had carotid stenting. In conclusion, of 52 patients, four (7.7 %) had unknown severe ICA stenoses, three of them with relevant impact on therapy. ICAs should be carefully evaluated for atherosclerotic disease using biphasic MDCT for head and neck cancer
Ecografia dell'addome nelle malattie ereditarie del metabolismo dei carboidrati
No full textPurpose. To determine the usefulness of abdominal sonography in inherited diseases of carbohydrate metabolism. Materials and methods. Thirty patients (age range, 4 months to 27 years) with glycogen storage diseases, galactosemia, disorders of fructose metabolism were studied with sonography. Echogenicity of the liver, sonographic dimensions of liver, kidneys and spleen were evaluated. Plasma blood parameters (ALT, AST, total cholesterol, triglycerides) were determined. Results. Liver was enlarged in 21/22 patients (95.4%) with glycogen storage diseases, in both subjects with disorders of fructose metabolism, and in 2/6 patients (33.3%) with galactosemia. Hepatic echogenicity was increased in 20/22 patients (90.9%) with glycogen storage diseases, and in the subject with hereditary fructose intolerance. Patients with galactosemia did not show increased liver echogenicity. Both kidneys were enlarged in 8/17 patients (47.0%) with glycogen storage disease type I. Subjects with increased hepatic echogenicity exhibited higher plasma concentrations of any blood parameter than the others with normal echogenicity (p<0.05). Conclusions. Sonography can be useful in identification of inherited diseases of carbohydrate metabolism even if further examinations are necessary for an ultimate diagnosis
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Role of computed tomography coronary angiography in the management of coronary anomalies
Full text linkCongenital abnormalities of coronary arteries are an uncommon cause of sudden cardiac death and are difficult to detect at coronary angiography. We describe two patients with acute coronary syndrome and non-occlusive coronary artery disease in which a 64-multidetector computed tomography (MDCT) coronary angiography showed the presence of a malignant coronary anomaly. Sixty-four-MDCT with the possibility of 3D reconstructions allows for easier diagnosis of coronary anomalies and provides essential details necessary for operative intervention
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