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L Pieri

Publications and source records attributed to L Pieri.

65 records · Page 4Linked to original sources
PubMedDate not supplied

[Digital videoradiography applied to the study of the recto-anal region during defecography].

The authors have employed a real-time fluoroscopic computerized equipment during defecography. Digitalized images were acquired at a rate of three frames/s and then processed and became immediately available. Digital defecography was employed in 67 patients with various anorectal diseases--i.e., rectocele, descending perineum, rectal prolapse, non-relaxing puborectalis syndrome and fecal incontinence. We found time-interval difference (TID) technique especially useful for it allowed different functional phases of defecation to be depicted on a single subtracted image and an evaluation of the movements of anorectal region. The high contrast resolution of the computerized equipment demonstrated even minimal contrast medium leaks in fecal incontinence. The examination is easy and rapid to perform with a low radiation dose to the patients.

Defecation↗
PubMedDate not supplied

[Digital subtraction radiology in the study of mobile structures of the larynx].

Digital subtraction radiography (DSR) was applied to the study of the larynx in 11 healthy subjects and 15 pathological cases. The method, consisting in the subtraction of images obtained at rest and during phonation or respiratory phases, allowed a clear definition of the normal moving structures--i.e. vocal cords, false cords, pyriform sinuses, thyroid cartilage. Moreover, several pathological conditions could be demonstrated. DSR asserts thus itself as a suitable technique in the functional evaluation of the glottis.

Fluoroscopy↗
PubMedDate not supplied

[Diagnostic imaging of intestinal invaginations in the adult. Report of 9 cases].

Adult intestinal intussusception affects the distal portions of the small bowel and the colon in 90% of cases. As a rule, its nature is neoplastic, its clinical presentation aspecific and its diagnosis is frequently an occasional finding during routine imaging examinations. We report on 9 adult patients with intestinal intussusception. All patients were examined with more than one of the following imaging modalities: radiologic study of the small bowel, barium enema, ultrasonography (US), and Computed Tomography (CT). The first diagnostic suspicion of intussusception was correctly made at US in 5 patients and at CT in 4 patients. At surgery, intussusception sites were the following: jejunum in one case, ileum in two cases, ileocolon in two cases and colon in four cases. CT correctly detected lesion site in all the patients who underwent it as the first diagnostic step, while US missed lesion site in one case. Pathology diagnosed a hamartomatous jejunal polyp, a lymphomatous ileal polyp, a lymphomatous polyp of the ileocecal valve, four cecocolonic adenocarcinomas and a left colic lipoma. Lesion nature was suspected at US in one case of ileal lymphoma, while CT suggested the presence of lipoma in one case of ileoileal intussusception. Our experience shows that intussusception can be diagnosed not only with conventional radiologic modalities, but also with US and CT, which are useful to depict both the lesion and its site and extent.

Adult↗
PubMedDate not supplied

[The 3rd national workshop on defecography: the functional radiology of (neo) rectal ampullae (ileal reservoir, colo-anal anastomosis, continent perineal colostomy)].

A survey was made in 13 Italian centers with a questionnaire concerning the (a) indications, (b) postoperative complications, (c) functional results and (d) diagnostic imaging modalities related to the making of an ileal or colonic (neo) rectum. Ulcerative colitis (100%), familial polyposis (61.5%) and Crohn's disease (15.3%) were the most common indications for an ileal pouch; rectal cancer (7.96%), chronic inflammatory diseases (15.3%), diverticulosis, rectal prolapse, redundant colon and imperforate anus (7.6% each) were the most common indications for a colonic pouch. Postoperative complications included pelvic abscess (14%), sinus tract/dehiscence (10%) and bowel obstruction (9%). When compared with the S and W variants, the J-shaped ileoanal pouch proved superior because urgency and fecal retention rates were lower (18.4% vs. 44.4% and 23% vs. 28.6%, p < 0.01 and p < 0.05, respectively), despite slightly more frequent staining episodes (15.8% vs. 11.1%; p < 0.05). As for colonic ampullae, fecal retention and provoked evacuation were more frequent in the J pouch and after gracileplasty; urgency and incontinence in the straight colo-anal anastomosis (33.3% vs. 22.2% and 41.6% vs. 33.3%, respectively). The functional outcome was assessed by anal endosonography (available in 4/13 centers), defecography and anorectal manometry. Abnormal findings included: (a) reduced capacity, barium leakage, anal gaping, sphincter damage (urgency and incontinence); (b) barium retention, pouch dilatation, split evacuation, knobs and strictures (fecal retention).

Defecation↗
PubMedDate not supplied

[Diagnostic approach to acute laryngeal trauma: role of computerized tomography].

Aim of this study was to assess the role of Computed Tomography (CT) in the management of acute laryngeal injuries by reviewing our 5 years' experience. From January, 1991, to November, 1996, sixteen patients with blunt trauma and 2 patients with penetrating injuries of the larynx underwent physical examination, laryngoscopy and CT; 2 of them underwent angiography too. The patients were divided into 3 groups according to Schaefer classification [13], first on the basis of physical examination, CT and laryngoscopy findings. The definitive group and therapy were decided on the basis of final spatial assessment. Physical examination diagnosed the presence and the anatomical level of laryngeal injuries in group I (4 patients); laryngoscopy and CT depicted the type of injury and suggested conservative management in 100% of cases. In group II (10 patients), conservative management was suggested by CT findings in the laryngeal, submucosal soft tissues and fascial plane injuries in 100% of cases. Physical examination findings were correct in 30% of cases, questionable in 30% and incorrect in 30%; the exam was not performed in 10% of cases. Finally, laryngoscopy findings were correct in 60% of cases, incorrect in 20% and not diagnostic in 20%. In group III (2 patients), exposed laryngeal injuries required immediate surgery. In group II, the selective application of CT was useful for assessing the degree of damage in 100% of cases and was helpful in planning conservative management. CT avoided surgery in one patient, showed laryngeal cartilaginous features in 2 patients and 2 pseudoaneurysmal injuries not suspected on the basis of physical examination findings.

Adolescent↗