Evaluation of leiomyoma of the esophagus with endoscopic ultrasonography

Fourteen patients with suspected leiomyoma of the esophagus were studied by endoscopic ultrasonography, computed tomography, endoscopy and barium swallow. The results were correlated with the histology of the resected specimens: in 2 patients with a peduncolated leiomyoma originating from the second echographic layer, endoscopic resection was performed. Endoscopic ultrasonography was superior to other imaging techniques in detection and staging of leiomyoma because it can determine the layer of origin, the direction of the growth and the consistency of the tumor.

Ultrasonographic imaging of neoplasms of the cervical esophagus

BACKGROUND/AIMS

We studied the effectiveness of ultrasonography in evaluating the cervical esophagus for the presence of large masses arising from the esophageal wall and consequently, the modifications of the visceral lumen.

MATERIALS AND METHODS

The cervical esophagus can be evaluated by ultrasound with longitudinal and axial scans, using the left thyroid lobe as an acoustic window. The cervical esophagus can be visualized from the C5 to D2 vertebrae. From November 1992 to July 1996, 220 patients with esophageal cancer and 120 subjects without esophageal disease (control group) were examined with ultrasonography. Examination of the cervical esophagus was performed with a linear high definition small parts probe with a frequency of 7.5-10 Mhz.

RESULTS

In all 31 patients with cancer of the cervical esophagus, ultrasonography of the cervical region showed the presence of an expanding mass from the esophageal wall as well as the modifications in the visceral lumen. The neoplasm of the cervical esophagus was visualized when its diameter exceeded 5 mm.

CONCLUSIONS

The experience of the authors shows that, during ultrasound examination of the cervical region, it is possible to accurately evaluate the cervical esophagus, either morphologically or functionally.

Endoscopic ultrasonography for preoperative staging of esophageal carcinoma

Endoscopic ultrasonography (EUS) is a relatively new diagnostic method to assess the extent and the depth of infiltration of esophageal carcinoma. Since October 1990, EUS was performed in 55 patients presenting with squamous-cell carcinoma of the esophagus, 40 of whom were operated on. The first 23 patients underwent EUS with an Olympus GF-2/EU-M2 echoendoscope with a 7.5-MHz transducer; the last 32 patients underwent EUS with an Olympus GF-3/EU-M3 instrument with a 7.5-12-MHz echoprobe. In 22 patients, the procedure was not completed because of the impossibility of passing through the neoplastic stenosis. The depth of infiltration (T parameter) was correctly defined by EUS in 36 of 40 patients (90%) compared with 50% of computed tomography (CT). The 12-MHz echoprobe yielded a global accuracy in staging T parameter of 94% compared to 82% of 7.5-MHz transducer. The lymph-node involvement (N parameter) was correctly classified by EUS in 20 of 23 patients (87%) compared with 39% by CT. EUS provides a high degree of accuracy in assessing the T and the N parameter in the staging of squamous-cell esophageal carcinoma. The major problem of the instrument is still the frequent impossibility of passing through the neoplastic stenosis.

Different clinical behaviors of acute hepatitis C virus infection are associated with different vigor of the anti-viral cell-mediated immune response

The anti-viral T cell response is believed to play a central role in the pathogenesis of hepatitis C virus infection. Since chronic evolution occurs in > 50% of HCV infections, the sequential analysis of the T cell response from the early clinical stages of disease may contribute to define the features of the T cell response associated with recovery or chronic viral persistence. For this purpose, 21 subjects with acute hepatitis C virus infection were sequentially followed for an average time of 44 wk. Twelve patients normalized transaminase values that remained normal throughout the follow-up period; all but two cleared hepatitis C virus-RNA from serum. The remaining nine patients showed persistent viremia and elevated transaminases. Analysis of the peripheral blood T cell proliferative response to core, E1, E2, NS3, NS4, and NS5 recombinant antigens and synthetic peptides showed that responses to all hepatitis C virus antigens, except E1, were significantly more vigorous and more frequently detectable in patients who normalized transaminase levels than in those who did not. By sequential evaluation of the T cell response, a difference between the two groups of patients was already detectable at the very early stages of acute infection and then maintained throughout the follow-up period. The results suggest that the vigor of the T cell response during the early stages of infection may be a critical determinant of disease resolution and control of infection.

Endoscopic ultrasonography for preoperative staging of gastric carcinoma

BACKGROUND/AIMS

To assess the accuracy and limitation of endoscopic ultrasonography in preoperative staging of gastric cancer, we performed a prospective study on 99 patients.

MATERIAL AND METHODS

Ninety-nine patients with gastric cancer had preoperative staging with endoscopic ultrasound (EUS) and CT.

RESULTS

The depth of infiltration (T parameter) was correctly defined by EUS in 58/65 patients (89%). The lymph node involvement (N parameter) was correctly classified in 44/65 patients (68%), the sensitivity was 74% and the specificity was 54%. The most frequent cause of understaging T parameter was microscopic tumor invasion, whereas overstaging was due to peri-tumor inflammation.

CONCLUSIONS

We believe that EUS is a reliable method, superior to all diagnostic tools, in the evaluation of locoregional extension of gastric cancer.

Polyarteritis nodosa and HIV infection: no evidence of a direct pathogenic role of HIV

A case of polyarteritis nodosa identified by the American College of Rheumatology (ACR) 1990 criteria in a 44-year-old HIV-infected man is described. The search for cytomegalovirus, HBV and B19 parvovirus infections was negative. In situ hybridization did not reveal proviral HIV-1 DNA in a skin sample. A zidovudine-associated vasculitis was excluded. Corticosteroid therapy resolved vasculitis manifestations and was well tolerated without opportunistic infections during the 10-month follow-up period. An indirect pathogenetic role of HIV as a possible cause of vascular damage cannot be excluded in our patient.

[Treatment of differentiated carcinoma of the thyroid and its limitations]

The Authors report their experience in the management of differentiated thyroid cancer (DTC) with extrathyroidal extension including nodal and distant metastases. Twelve patients were included in the review: 11 of them were previously and elsewhere considered not curable. On the contrary, integrated treatment (surgery, radioiodine and radiation therapy) allowed to control the disease in 10 patients with a survival ranging from 14 years to 29 months. Cytopathologic analysis, in the two patients who died, showed a differentiated thyroid cancer with anaplastic areas. Integrated treatment, therefore, represents the treatment of choice for advanced DTC only in total absence of anaplastic cells.

[Long-term cyclic and periodic omeprazole in the prevention of recurrences of duodenal ulcer]

The aim of this study was to establish if the discontinuous assumption of omeprazole was effective to reduce the recurrence of duodenal ulcer disease as the cyclic periodical assumptions of the same drug. Consequently two different posologies, after duodenal ulcer recovery, were compared, both based on omeprazole. In the first trial 20 mg/die were administrated for the first 15 days of every month, for 1 year. In the second, the same dose were administrated for 15 days only when symptoms occurred. It was not utilised a comparison with placebo or other drugs. Symptomatic score and recurrence rate were evaluated by means of EGDS after 6 months and 1 year. In some patients were also controlled the gastrinemia. Both trials were effective in the prevention of duodenal ulcer relapse, without increasing gastrinemia. Nevertheless patients assuming omeprazole only when symptomatic, showed a greater symptomatic score. Concluding, the assumption of omeprazole only when symptoms occur is effective in the prevention of relapse but require a close relation between patients and the medical team.

[The sternotomy and thoracotomy approaches in the treatment of differentiated thyroid cancer in an advanced phase]

The authors report their experience in the treatment of well-differentiated thyroid cancer. The analysis of 5 cases treated with extensive surgery give the opportunity to discuss about the use of sternotomy or thoracotomy to eradicate mediastinal lymph nodes. The importance of preoperative assessment, especially by histological examination is stressed as well as the role of surgery in the multidisciplinary approach for the treatment of the disease.

Cell-type-specific transactivation of the parathyroid hormone-related protein gene promoter by the human T-cell leukemia virus type I (HTLV-I) tax and HTLV-II tax proteins

The human T-cell leukemia virus type I (HTLV-I) and HTLV-II Tax proteins are potent transactivators of viral and cellular gene expression. Using deletion mutants, the downstream parathyroid hormone-related protein (PTHrP) promoter is shown to be responsive to both HTLV-I and HTLV-II Tax as well as the AP1/c-jun proto-oncogene. Transactivation of PTHrP by Tax was seen in T cells but not in B-cell lines or fibroblasts. A carboxy terminal Tax deletion mutant was deficient in transactivation of both the PTHrP and IL2R alpha promoters but not the HTLV-I long terminal repeat (LTR). Exogenous provision of NFkB rescued IL2R alpha expression but not the PTHrP promoter. Thus, HTLV-I Tax, HTLV-II Tax, and c-jun transactivate PTHrP and may contribute to the pathogenesis of hypercalcemia in adult T-cell leukemia.

Loss of nocturnal decline of blood pressure in hypertension due to chronic renal failure

The aim of this study was to assess the blood pressure profile of chronic renal failure in comparison with essential hypertension. Thirty hypertensive patients with chronic renal failure due to non-vascular nephropathies were matched by age, sex, and mean 24 h blood pressure, with 30 patients affected by uncomplicated mild-to-moderate essential hypertension. They were studied in an open hospital ward. Diet, meal times, sleep times, and activity schedules were standardized. Noninvasive, automatic, blood pressure recordings were performed for 48 h at sampling intervals of 15 min. The mean 24 h blood pressure almost coincided in the two groups. However, in essential hypertension a mean (+/- SD) nocturnal fall of systolic and diastolic blood pressure was found (12.7 +/- 3.8 and 12.9 +/- 4.8 mm Hg, respectively), while renal patients displayed an average nocturnal increase of 2.7 +/- 8.9 mm Hg and 3.7 +/- 7.8 (P less than .001). The renal patients had also higher heart rates, with a significantly blunted nocturnal fall (4.4 +/- 4.5 beats/min as compared to 9.3 +/- 3.1 beats/min of essential hypertension; P less than .001). Among the renal patients, the day-night blood pressure changes showed no significant correlation with age, creatinine clearance, hematocrit, nocturnal change in heart rate, or day or night mean blood pressure levels. These data suggest that an abnormal day-night pattern of blood pressure is present in chronic renal failure patients independently from external interfering factors. Hence, casual measurements of blood pressure confined to daytime may underestimate a hypertensive condition associated with chronic renal failure.

[Diagnosis and treatment of hepatic echinococcosis with fistulas of the major bile ducts]

The authors report their experience of secondary major biliary fistula (MBF) for hepatic echinococcosis. The analysis of the results of the surgical treatments showed that "conservative" operations have major mortality than "radical" operations. The importance of an exact preoperative diagnosis of presence, side and size of MBF, in order to a correct choice of the most suitable operations, is underlined. Endoscopic retrograde cholangio-pancreatography seems to be a reliable diagnostical technique, also if compared with traditional methods (U.S., C.T.).

[Epidemiology of beta-hemolytic streptococcus group B colonization in perinatology. Methodology considerations and personal data]

GBS have attracted increasing attention in recent years as a major cause of serious neonatal sepsis. The maternal genital tract is the principal source of organism for babies with the most serious early onset form of disease. Reported rates of GBS carriage in the genital and anorectal tract of pregnant women vary widely: much of the variations is undoubtedly associated with differences in laboratory technique, sampling site and number of samples taken. The key bacteriological factor is the use of enrichment culture technique. We have studied GBS colonization in 274 pregnant women during labor and in their newborns (275). Carriage was documented in 25.91% women by vaginal (low portion) and anorectal swabs, and in 6.14% newborns by auricolar, pharyngeal and rectal swabs taken at birth and before leaving nursery. The higher rectal colonization rate in pregnant women suggests that the gastrointestinal tract is the primary site of GBS carriage. Colonized newborns have no obstetrics risk factors, except for maternal GBS carriage. Our data confirms that limiting antimicrobial intrapartum prophylaxis to premature infants leaves term infants (who account for 60% of the fetal cases of early onset disease) unprotected, unless membrane rupture is prolonged. Prevention of early onset infections among low-risk term infants will require additional investigations.

[Male pseudohermaphroditism caused by 17-alpha-hydroxylase deficiency. Personal case reports and a review of the literature]

Adrenal hyperplasia due to 17-alpha-hydroxylase deficiency is coupled with precocious hypogonadism, which causes pseudohermaphroditism in XY subjects and primary amenorrhea in XX subjects. The physiology of gluco- and mineral-corticoid adrenal activity, as well as the biosynthesis of gonadal steroids, is totally altered. We report two cases of XY subjects, identified as females, who came to our observation for primary amenorrhea and exhibited a hypertension with hypokaliemia. We also report a critical review of the literature, with a main attention to differential diagnosis and mineralcorticoid physiopathology, in order to contribute to the knowledge of normal adrenal function and of this enzymatic defect.

[Sulglicotide in the prevention of gastric disease induced by NSAID. Double-blind controlled study versus placebo]

Non-steroidal anti-inflammatory drugs, essential for the treatment of rheumatic diseases, are frequently associated with significant adverse effects on the integrity of the gastrointestinal mucosa. Sulglicotide (S), a natural product, has been found to possess gastromucosal protective properties. Aim of the present study was to evaluate whether (S) 200 mg t.i.d prevented or reduced the severity of gastric and/or duodenal mucosal injury induced by Diclofenac. A total of 30 patients with either rheumatoid arthritis (RA) or osteoarthritis (OA) who required NSAID therapy for at least 8 weeks were enrolled into a double-blind randomized placebo-controlled study. The main criteria for entry into the trial was the absence of gastrointestinal symptoms, and gastric/duodenal lesions assessed by endoscopy. At the end of the treatment endoscopy and relative symptoms were assessed. Six out of 15 patients, in both groups of treatment developed mucosal injury, but only in the placebo group the gastric damage was important (ulcer and petechiae) while in the group (S) we observed only hyperemia of the gastric mucosa. These preliminary data indicate the usefulness of Sulglicotide in preventing or reducing mucosal injury from NSAID treatment.

Calcium antagonists and hormone release. VI. Effects of a calcium antagonist (verapamil) on the biphasic insulin release in vivo

The present study was designed to investigate the influence of a calcium antagonist (verapamil) on the two phases of insulin release. The present results confirmed our previous studies and in vitro data, showing that the first phase insulin release is not inhibited by a calcium antagonist and strongly indicated that glucose stimulated insulin secretion has two phases of release: (1) the first phase of release, which is independent from extracellular calcium; (2) the second phase of release, which was inhibited by calcium antagonists, is dependent from calcium uptake from an extracellular source.

Effects of heroin addiction on the responses of glucose, C-peptide and insulin to a standard meal

1. The aim of the study was to examine the responses of plasma glucose, C-peptide immunoreactivity (CPR) and total immunoreactive insulin (IRI) to a standard meal in heroin addicts, since the presence of immunoreactive beta-endorphin has been demonstrated in human endocrine pancreas. 2. Ten heroin addicts and 10 control subjects participated in the study. The addicts had been taking heroin (from 0.5 to 2 g/day) for at least 2 months and they had no detectable diseases. 3. After a 12 h fast, each subject received a standard meal; blood samples were taken at -15, 0, 15, 30, 60 and 120 min to determine glucose, CPR and IRI. Calculation of the CPR/IRI molar ratio was used as a semiquantitative estimation of the hepatic extraction of insulin. 4. No difference in plasma glucose was observed between the groups. Addicts had lower CPR than normals at 15, 30 and 120 min (P less than 0.01). On the contrary, IRI was higher in addicts than in normals (P less than 0.05 at -15 and 0 min, P less than 0.01 at 15, 30 and 60 min), except at 120 min. The CPR/IRI molar ratio was lower in addicts (P less than 0.01). 5. Heroin addiction seems to produce a beta-cell failure and contemporaneously a state of hyperinsulinaemia; blood glucose remains in the normal range. 6. We conclude that chronic heroin addiction may produce a change in the rate of hepatic extraction of insulin.

[Group B beta-hemolytic Streptococcus: study on colonization of mother-neonate couples observed in January-May 1988 at the obstetrics and gynecology unit and the neonatal section at the Pistoia Hospital]

In a previous study, carried out on women at delivery recovered at the obstetric ward of the Pistoia Hospital, we noted a high incidence of group B Streptococci cultured from vaginal site. Because group B streptococcal infection is very serious in neonates we decided to examine the frequence of vertical and horizontal transmission among the mother-neonate couples. We have also compared their rate of colonisation by doing rectal and vaginal swabs on women and rectal, vaginal and external auditory canal swabs on babies. In fact we known that infants moderately to heavily colonised with group B Streptococci at birth, appear to have a significant higher risk of developing serious disease than do infants only lightly colonised. In our work we haven't observed any acute group B streptococcal infection, but we have identified 18 couples mother-neonate colonised by the same group B Streptococci serotype, which is proof of an easy vertical transmission of group B Streptococci whilst horizontal transmission is very rare (only one case).