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Biomedical subjects

Ferdinando Scarano

Publications and source records attributed to Ferdinando Scarano.

14 recordsLinked to original sources

Giant mucocele of the appendix: clinical and imaging findings in 3 cases.

OBJECTIVE: Clinical and imaging (sonographic and computed tomographic [CT]) findings in 3 cases of giant mucocele of the appendix are described. METHODS: Clinical records of 3 cases of giant mucocele of the appendix were reviewed. All patients had a basal B-mode sonographic examination and a contrast-enhanced sonographic examination using a second-generation low-mechanical index contrast medium. In all cases, a dual-phase spiral CT examination was carried out. RESULTS: In 2 cases, the abdominal masses were discovered in asymptomatic patients; 1 patient had vague abdominal discomfort. A pathologic diagnosis of benign cystoadenoma was found at pathologic examination in all cases, and malignant pseudomyxoma peritonei was disclosed in 1 patient 1 year later. Common sonographic findings were as follows: (1) a huge abdominal mass with a maximum diameter ranging between 20 and 25 cm; (2) a thin hyperechoic border without either solid vegetations or signs of infiltration of surrounding tissues; (3) a complex internal echo structure with anechoic lacunae interspersed between curvilinear, wavy bands of echogenic material (the so-called sonographic onion skin sign); and (4) avascularity of the masses shown on contrast-enhanced sonography with a low-mechanical index medium. At CT, a well-circumscribed cysticlike mass of low attenuation was displayed in all cases. There was lack of enhancement during a dual-phase examination in 2 cases; in the other, a small peripheral area of faint enhancement was appreciated. Only in the latter case could CT reliably assess the origin of the mass. CONCLUSIONS: It is suggested that a combination of sonographic (namely the onion skin sign) and CT findings may aid in the correct preoperative diagnosis of giant mucocele of the appendix.

Aged↗

Liver histology in patients with HBsAg negative anti-HBc and anti-HCV positive chronic hepatitis.

The liver histology of 68 consecutive anti-HCV/HCV-RNA positive chronic hepatitis patients who were HBsAg/anti-HBs negative, anti-HBc positive (Case bC group) was compared with that of 68 anti-HCV/HCV-RNA positive chronic hepatitis patients who were HBsAg/anti-HBc negative (control C group). The patients were pair-matched by age (+/-5 years), sex, and risk factors for the acquisition of parenteral infection. Case bC group showed a significantly higher mean fibrosis score (2.3 +/- 1.1) than control C group (1.5 +/- 1.1, P <0.001) and more histological evidence of cirrhosis (22% vs. 7.3%, P <0.05). In addition, the patients in Case bC group showed more severe inflammation of the portal tracts (3.5 +/- 0.8 vs. 3.0 +/- 1.1, P <0.005) and there was a higher prevalence of patients with rhomboid-shaped hepatocytes (26.4% vs. 2.7%, P <0.005), acidophilic bodies (33.8% vs. 1.4%, P <0.0001), sinusoidal inflammation (29.4% vs. 10.3%, P <0.01), lymphoid follicles in the portal tracts (72% vs. 44.1%, P <0.05), Kupffer cell proliferation (29.4% vs. 11.8%, P <0.05), bile duct damage (44.1% vs. 10.3%, P <0.0001), and ductular proliferation (30.9% vs. 2.7%, P <0.001) than in control C group. No difference in these histological features was observed between HBV-DNA negative and positive patients in Case bC group. The data suggest that anti-HBc positive patients with HCV chronic infection have a significantly higher degree of liver fibrosis, and that hepatocellular apoptosis, bile duct damage, and ductular proliferation correlate with the presence of this antibody in the serum.

Adult↗

[An attempt to improve classification of HCV-correlated chronic hepatitis].

To verify the clinical efficacy of the Desmet classification of chronic hepatitis C we reviewed 801 liver biopsies from patients with HCV-chronic hepatitis (CH). The diagnosis of chronic hepatitis was assessed according to the Desmet classification based on the Knodell Histological Activity Index (HAI) (minimal CH=score 1-3; mild CH= 4-8; moderate CH= 9-12; severe CH= 13-18). Liver fibrosis was assessed according to the Scheuer scoring system. One hundred forty-eight patients had cirrhosis and 653 CH. Of these 653, according to the Desmet classification 145 patients showed minimal, 424 mild, 73 moderate and 11 severe chronic hepatitis. Since the classification underestimated the moderate and severe forms of HCV-related chronic hepatitis, we evaluated the possibility of improving the Desmet classification of chronic hepatitis C using our classification: minimal CH= score 1-3; mild CH= 4-6; moderate CH= 7-8; severe CH= 9-18. According to our classification 145 showed minimal CH, 363 mild CH, 61 moderate CH and 84 severe CH. All the 61 patients who crossed over from mild CH under the Desmet to moderate CH under our classification showed a periportal inflammation of grade 3, and all the 73 patients but 8 who crossed over from moderate to severe showed a grade of periportal inflammation higher than 3. The Desmet classification of HCV-related chronic hepatitis underestimated the severe forms of HCV-CH, while our classification seems to be suitable also for chronic hepatitis C.

Adolescent↗

Contrast-enhanced sonographic appearance of hepatocellular carcinoma in patients with cirrhosis: comparison with contrast-enhanced helical CT appearance.

OBJECTIVE: We sought to investigate the efficacy of contrast-enhanced sonography using a second-generation contrast agent for the evaluation of hepatocellular carcinoma in patients with cirrhosis by comparing the results to those obtained with contrast-enhanced helical CT. SUBJECTS AND METHODS: Between October 2002 and March 2003, 74 patients with cirrhosis (60 men and 14 women; age range, 47-80 years; mean age, 67 years) who had a single nodule of hepatocellular carcinoma were selected to be studied from a cohort of 437 patients with cirrhosis. The size range of the 74 nodules was 9-65 mm (mean, 28.2 mm). Twenty-eight (38%) were 20 mm smaller (range, 9-20 mm; mean, 16.6 mm), and 46 (62%) were larger than 20 mm (range, 21-65 mm; mean, 35.2 mm). Contrast-enhanced sonography was performed at a low mechanical index after IV administration of the contrast agent SonoVue. CT scans were obtained in all patients. The enhancement pattern related to tumor hypervascularity was analyzed. The chi-square test was used for statistical analysis. RESULTS: For the 28 hepatocellular carcinomas 20 mm or smaller, contrast-enhanced sonography showed 15 (53.6%) as hypervascular and 10 (35.7%) as avascular; three (10.7%) carcinomas were missed. On CT, 12 (42.9%) of the 28 hepatocellular carcinomas appeared hypervascular, 13 (46.4%) appeared hypovascular, and three (10.7%) were missed. For the 46 hepatocellular carcinomas larger than 20 mm, contrast-enhanced sonography showed 42 (91.3%) as hypervascular and four (8.7%) as avascular. On CT, 35 (76.1%) hepatocellular carcinomas appeared hypervascular, eight (17.4%) appeared hypovascular, and three (6.5%) were missed. Differences between CT appearance of hepatocellular carcinomas and contrast-enhanced sonographic appearance of the carcinomas were not statistically significant. Concordance between contrast-enhanced sonographic and CT appearances was observed in 61 (82.4%) of 74 cases. CONCLUSION: Contrast-enhanced sonography is similar to CT for detecting hepatocellular carcinoma hypervascularity. It could be complementary to conventional unenhanced sonography for evaluation of liver nodules.

Aged↗

Ultrasound diagnosis of intragastric balloon complications in obese patients.

PURPOSE: Our study describes ultrasonography (US) aspects of complications related to the use of the Bioenterics intragastric balloon (BIB) system for the treatment of moderate obesity. MATERIALS AND METHODS: Over the last three years 151 BIBs were endoscopically placed and inflated with 500-600 ml of saline plus 10 ml of methylene blue in 131 patients (mean age 38.4 years, range 18-72; 46 males, 85 females, mean body mass index 43.8 kg/m(2)). In all cases abdominal US was carried out before and 1-2 days after endoscopy and thereafter at scheduled follow-up visits and/or whenever the patient complained of heartburn, vomiting, a sensation of ''absence of the BIB'' with or without staining of urine and/or faeces. RESULTS: The BIB appeared as a round anechoic structure, with a thick hyperechoic wall and a hyperechoic band-like valve inside. In 8 cases staining of urine and/or faeces prompted immediate endoscopic removal. In 10 patients US findings of BIB-related complications were: 1) decreased volume with a visible valve (5 cases; in two of these staining of urine was reported); 2) multiple hyperechoic streaks regularly spaced due to a completely collapsed BIB, not modified by decubitus changes (3 cases; one patient reported staining of urine); 3) migration through the bowel (2 cases): in one patient the BIB was passed after 4 days, whereas in the other case bowel obstruction required laparoscopic surgery. CONCLUSIONS: In conclusion, US provides a quick and accurate method for the assessment of BIB-related complications in obese patients.

Abdomen↗

HAV replication in acute hepatitis with typical and atypical clinical course.

The correlation between the length of viremia as detected by reverse transcriptase-polymerase chain reaction (RT-PCR) and the clinical course of hepatitis A virus (HAV) infection was studied. Sixty-six consecutive patients with acute hepatitis A who were admitted to hospital in two infectious disease units in southern Italy were enrolled: 57 had a self-limited course of the disease (typical course), 4 a prolonged course, and 5 relapsing hepatitis. Plasma HAV RNA was sought by RT-PCR, using primers made at 5'-NTR of HAV, designed to amplify a 273-bp fragment and detected by 2% agarose gel and by hybridization with a specific biotinylated probe. In four patients with prolonged acute hepatitis A, the plasma HAV RNA, which was positive on the day of admission to hospital, was found to be negative from day 62, 46, 84, and 105, respectively, after the onset of the symptoms. In patients with relapsing hepatitis, HAV viremia paralleled the clinical and biochemical course of disease. In all patients with a typical self-limiting course, clearance of plasma HAV RNA was observed within 20 days of the onset of symptoms. In most patients, plasma HAV viremia became undetectable before the normalization of serum aminotransferases, underlining the importance of the immune reaction in the pathogenesis of acute hepatitis A. The data also suggest that the detection of plasma HAV RNA after 20 days of illness may predict a prolonged course of the disease, but relapsing hepatitis remains unpredictable on the basis of plasma HAV determination.

Acute Disease↗

Percutaneous sonographically guided saline-enhanced radiofrequency ablation of hepatocellular carcinoma.

OBJECTIVE: The purpose of our study was to analyze the efficacy, side effects, and short-term complications of saline-enhanced percutaneous radiofrequency ablation performed under sonographic guidance in a series of cirrhotic patients with hepatocellular carcinoma. SUBJECTS AND METHODS. Between September 2000 and June 2002, 84 patients (55 men and 29 women) with cirrhosis who ranged in age from 48 to 74 years (mean age, 64 years) and who had 95 hepatocellular carcinomas (seven patients had two tumors and two patients had three tumors) were treated with high frequency-induced thermotherapy. The diameters of the tumors ranged from 1.5 to 8.5 cm (mean, 3.6 cm). The efficacy of radiofrequency ablation was evaluated with triphasic contrast-enhanced CT performed 4 weeks after the procedure. RESULTS: Posttreatment CT showed complete necrosis in 73 (77%) of 95 hepatocellular carcinomas in 62 patients. Complete necrosis based on tumor size was seen in 40 (95%) of 42 tumors with diameters equal to or smaller than 3 cm, 32 (71%) of 45 tumors with diameters between 3.1 and 5.0 cm, and one (12%) of eight tumors with diameters larger than 5.0 cm. Twenty-two hepatocellular carcinomas showed incomplete necrosis. None of the patients experienced major complications. Four patients were lost to follow-up. The length of the follow-up period ranged from 4 to 22 months (mean, 10 months). One patient died 8 months after the radiofrequency ablation treatment. All the remaining patients are still alive. During the follow-up period, eight (10%) of 80 patients showed a local recurrence on sonography and CT. CONCLUSION: Our experience suggests that percutaneous radiofrequency ablation of hepatocellular carcinoma with high frequency-induced thermotherapy is safe and effective in the treatment of hepatocellular carcinomas equal to or smaller than 3 cm, fairly effective for hepatocellular carcinomas between 3 and 5 cm, and ineffective for tumors larger than 5 cm.

Aged↗

Uselessness of liver biopsy in patients with hepatitis C virus chronic infection and persistently normal aminotransferase levels.

This case-control study evaluated the real need for liver biopsy in subjects with persistently normal aminotransferase values over a long period by comparing the histological features of these subjects with those of patients with abnormal aminotransferase values. We considered as "Cases" all 32 consecutive anti-HCV/HCV-RNA positive subjects with at least eight normal serum ALT values during the last twelve months; for each "Case", we selected as a "Control" one anti-HCV/HCV-RNA positive patient with at least two abnormal serum ALT values during the last twelve months. The Cases and Controls were matched for age ( 5 years) and sex. In the Case group, 1 subject showed normal liver tissue, 18 minimal chronic hepatitis (CH) and 13 mild CH. In the Control group, 7 subjects showed minimal CH, 19 mild CH, 3 moderate CH, 1 severe CH and 2 cirrhosis. The subjects in the Control group showed a significantly higher HAI score (5.39+2.81) than those in the Case group (2.96+1.62, p < 0.001). The subjects in the Control group more frequently showed a fibrosis score greater than 1 (28.1%) compared to the Case group (9.4%; p<0.05). Finally, steatosis was more frequent and more severe in the Control group than in the Case group (respectively, 78.1% vs 50%, p < 0.05; and 1.47+1.16 vs 0.6+0.71, p < 0.001). The HAI and fibrosis scores did not correlate with the ALT value, HCV genotype or HCV viral load in either the Case or Control group. Our findings showed that the subjects with a persistently normal serum ALT value had minimal or mild chronic hepatitis, thus demonstrating that a liver biopsy is not indicated for these subjects.

Adolescent↗

[Cutaneous cryptococcosis in an immunocompetent host].

An immunocompetent 62-year-old woman presented with cutaneous lesions over her right arm and the hypogastrium. The diagnosis of cutaneous cryptococcosis was made on the basis of the demonstration and isolation of Cryptococcus neoformans from the aspirated pus. The patient responded to fluconazole treatment.

Cryptococcosis↗

Helicobacter spp. and liver diseases.

To test whether Helicobacter species play a role in the enhancement of liver necro-inflammation and fibrosis and in the development of hepatocellular carcinoma (HCC), we sought DNA sequences of Helicobacter species in liver specimens from patients with viral-related chronic hepatitis, HCC or metastatic liver carcinoma. We enrolled 28 consecutive patients with ultrasound evidence of hepatic nodule(s) on their first liver biopsy: 21 had histological evidence of HCC (Group I) and 7 of metastatic liver carcinoma (Group II). In the same period we observed 27 consecutive patients with chronic hepatitis on their first liver biopsy (Group III). Helicobacter sequences were sought by PCR using primers for the 16S rDNA of Helicobacter spp, designed to amplify a 400 base-pair fragment, and detected by 2% agarose gel and hybridization with a specific biotinylated probe. We used, as positive controls for the DNA extraction from liver tissue, hepatic biopsy sections in which HBV infection was confirmed by HBcAg positivity and in which we amplified HBV-DNA by specific primers; positive controls for the amplification of Helicobacter spp were obtained from gastric biopsy sections in which Helicobacter pylori infection was confirmed by biochemical and histochemical tests. HBV-DNA was found in all five HBcAg positive liver biopsies. Helicobacter spp 16S rDNA was detected in all five biopsy specimens of gastric mucosa and in none of liver specimens from patients in any group. Our data suggest that Helicobacter species were not involved in the pathogenesis of virus-related HCC, chronic hepatitis or liver carcinoma metastasis.

Adult↗

[Bacterial granulomatous hepatitis].

The liver may react to different infectious and non- infectious agents, developing granulomatous lesions which characterize granulomatous hepatitis. Granulomas of the liver are circumscribed inflammatory lesions (size from 50 to 300 mm) composed of epithelioid cells, varied numbers of mononuclear cells and eosinophils and multinucleated giant cells. They represent a specialized cell-mediated immune response to a wide variety of etiological factors. A broad spectrum of microorganisms may trigger hepatic granulomas. M. tuberculosis is the more frequent agent (~ 44%). Granulomatous hepatitis is characterized by a febrile illness with systemic signs and symptoms such as fatigue, sweating, shivering, hepatomegaly and/or splenomegaly, abnormalities in serum liver tests (aminotransferase, alkaline phosphatase). Liver biopsy provides diagnostic information in approximately 15-30% of cases, identifying directly the microbial agent with special microbial stains and polymerase chain reaction or finding distinctive microscopic features, suggestive of specific microorganisms. In such cases appropriate therapy is possible. Unfortunately in one third of cases is impossible to reach aetiological diagnosis on histological criteria alone. In these cases a therapeutic attempt with steroids, effective in the idiopathic granulomatous hepatitis, may be useful.

Anti-Bacterial Agents↗

Ultrasound as the imaging method of choice for monitoring the intragastric balloon in obese patients: normal findings, pitfalls and diagnosis of complications.

BACKGROUND: The authors studied ultrasound (U/S) monitoring of the BioEnterics intragastric balloon (BIB) for treatment of moderate obesity by describing normal U/S aspects, diagnostic pitfalls and assessment of complications. METHODS: Over the last 3 years, 151 BIB systems have been endoscopically placed and filled with 500-700 ml of saline plus 10 ml of methylene blue in 131 patients (mean age 38.4 years, range 18-72); males/females 46/85; mean BMI 43.8 kg/m(2)). In all patients abdominal U/S was carried out before and 12 days after endoscopy and thereafter at scheduled follow-up examinations, and/or whenever the subject complained of epigastric burning/ache, vomiting, and lack of sensation of a BIB with or without staining of urine and/or feces. RESULTS: The BIB appeared as a round anechoic structure, with a thick hyperechoic wall and a hyperechoic band-like valve inside. Complications occurred in 18 patients: in 8, staining of urine and/or feces prompted immediate endoscopic removal. In 10 patients, U/S findings were: 1) decreased volume, loss of the spherical shape with the valve still visible (5 cases); 2) multiple hyperechoic streaks regularly spaced due to a completely collapsed BIB, not modified by decubitus changes (3 cases); 3) migration through the intestine (2 cases): in one patient the BIB was passed in the stools after 4 days, whereas in the other case large bowel obstruction required laparoscopic surgery. CONCLUSION: U/S affords a quick, safe and accurate method for assessing both BIB status after endoscopic deployment and the most frequently-occurring complications (partial/complete deflation, migration through the pylorus with intestinal obstruction) in obese patients.

Adolescent↗