3D evaluation of tooth crown size in unilateral cleft lip and palate patients.

AIM: The aim of this retrospective study is to evaluate and compare the 3-dimensional (3D) crown sizes of the left and right sides of upper and lower dental arches in patients with unilateral cleft lip and palate (UCLP). MATERIALS AND METHODS: Dental casts of 94 patients all in permanent dentition were included in this study. Dental casts were divided into three groups as 36 casts with unilateral left cleft lip and palate (ULCLP), 18 casts with unilateral right cleft lip and palate (URCLP), and 40 casts without cleft (control). Mesiodistal (MD), buccolingual (BL), and gingiva incisal (GI) values of each tooth were measured by scanning the dental models with a high-precision optical 3D scanner. Paired t-test and independent t-test were used for statistical analysis. RESULTS: U1 MD, U6 MD (P = 0.001) and BL (P = 0.01), L3 GI (P = 0.05) were greater in UCLP patients on the non-cleft side while U1 GI, L1 BL, L5 MD (P = 0.001), L4 MD, and BL (P = 0.01) values were found to be greater on the cleft side. Comparison of the cleft-sides and the control group showed that MD, BL, and GI dimensions of teeth on the cleft sides were generally found to be smaller, excluding the UR7 GI values for URCLP group (P = 0.05). CONCLUSION: In the measurements of teeth size, reliable and repeatable results were acquired through 3D software. Tooth size asymmetries can occur non-syndromic UCLP patients in both jaws. MD, BL, and GI dimensions of teeth are mostly found to be smaller in patients with CLP.

Assessment of sella turcica area and skeletal maturation patterns of children with unilateral cleft lip and palate.

OBJECTIVES: The aim of this case-control study was to assess sella turcica area and skeletal maturity in children with unilateral cleft lip and palate (UCLP) and compare with those of non-cleft children. SETTING AND SAMPLE POPULATION: A total of 85 UCLP patients aged 7.5-17.08 years (Group 1: age 7-11 years, Group 2: age 11-14 years and Group 3: age 14-18 years) were compared with 85 control subjects without clefts who were divided into similar age groups. MATERIALS AND METHODS: Hand-wrist radiographs and cervical vertebra maturation stages (CVMS) were used to evaluate growth. Lateral cephalograms were traced, and reference points of sella were determined. Sella turcica area was measured using a digital planimeter. RESULTS: Comparison of overall growth on hand-wrist radiographs revealed no significant difference between cleft and non-cleft subjects. However, according to the chronological age groups, Group 1-UCLP showed statistically significant delay in skeletal maturation when compared with the age-matched control subjects (P = .05). This difference was due to the delay among male subjects (P = .05). As for CVMS, more significant maturation delay was observed in Group 1-UCLP (P = .001) and was attributable to both male and female subjects (P = .05). Comparison of sella turcica area showed no significant difference between UCLP patients and controls. CONCLUSION: Although children with CLP showed significant delay in growth when they are younger compared with the non-cleft children, sella turcica area measurements were similar for individuals in both groups.

Vertebrobasilar insufficiency and gamma-glutamyltransferase: An emerging relationship demonstrating inflammation and atherosclerosis.

OBJECTIVES: Vertebrobasilar insufficiency (VBI) is a pathology arising from the reduction in flow rate of vertebral arteries and mainly caused by inflammation and atherosclerosis. Gamma-glutamyltransferase (GGT) is a marker which has been recently recognized as a marker of inflammation and atherosclerosis. We aimed to investigate the relationship between GGT levels and VBI for the first time. METHODS: In this cross-sectional study, of 3100 subjects who had vertebrobasilar doppler ultrasonography (VBU) were evaluated and 1042 of them who met the inclusion criterias were included. VBU reports, GGT levels, blood chemistry, lipid profile were received from patients' files. Patients were evaluated according to VBU measurements and divided into two groups,VBI and non-VBI. RESULTS: Mean vertebral arterial blood flow volume values were 149.99±32.93 mL/m in VBI group and 286.88 ± 70.98 mL/m in non-VBI group. Mean GGT and CRP values were significantly higher in the VBI group than in the non-VBY group (p < 0.001) ( p < 0.001), respectively. Vertebral artery blood flow volume was negatively correlated with GGT (r: -0.208, p < 0.001) and CRP (r: -0.119, p < 0.001). CONCLUSION: We demonstrated a significant correlation between serum GGT levels and VBI. In addition, higher GGT level was an independent risk factor for the presence of vertebrobasilar system inflammation and atherosclerosis (Tab. 2, Fig. 3, Ref. 27).

P wave dispersion increases during hemodialysis sessions.

BACKGROUND/AIMS: Atrial fibrillation (AF) is common among hemodialysis (HD) patients and is associated with high mortality. P wave dispersion (PWD) is a noninvasive electrocardiographic marker of paroxysmal AF. Our aim was to evaluate the effect of HD session on PWD. METHODS: Twenty-five patients (mean age 63 years, 10 males) with sinus rhythm and undergoing chronic HD treatment were included. Blood samples were drawn and 12-lead electrocardiograms were recorded immediately before HD session, at the 2nd hour during HD and at the end of the HD session. The difference between maximum and minimum P wave durations was calculated as PWD. RESULTS: PWD significantly increased during HD sessions compared with predialysis values (41 +/- 12 vs. 21 +/- 10 ms, respectively, p < 0.001), then decreased to a value of 24 +/- 7 ms at the completion of HD, which was not significantly different from the predialysis values. PWD during HD was significantly correlated with predialysis systolic and diastolic blood pressure (r = 0.42, p = 0.037, and r = 0.59, p = 0.002, respectively) and predialysis serum potassium level (r = 0.44, p = 0.031). Linear regression model revealed that predialysis diastolic blood pressure (p = 0.002), predialysis serum potassium level (p = 0.037) and the amount of ultrafiltration (p = 0.048) were the significant predictors of prolonged PWD during HD. CONCLUSION: PWD increases significantly during HD sessions. This may increase the risk of AF episodes during HD. High diastolic blood pressure and serum potassium level before HD and ultrafiltration amount may predict prolonged PWD during HD.

Short term effects of GnRH agonists on plasma fibrinolytic balance in patients with advanced prostate cancer.

BACKGROUND: Gonadotropin releasing hormone (GnRH) agonists are the cornerstone of metastatic prostate cancer treatment. Cardiovascular effects of GnRH agonists are unclear. In this study, we investigated the short term effects of GnRH agonists on plasma fibrinolytic parameters in patients with metastatic prostate cancer. METHODS: Eleven patients (mean age 69.3 +/- 6.5) with metastatic prostate cancer and a clinical indication for GnRH agonist therapy were selected. Plasma plasminogen activator inhibitor (PAI-1) antigen (Ag), tissue plasminogen activator (t-PA) Ag and thrombin-activatable fibrinolysis inhibitor (TAFI) activity levels were measured at baseline and at 4 weeks after the first dose of GnRH agonist, Goserelin Acetate (Zoladex, subcutaneous administration, 10.8 mg). RESULTS: Serum prostate specific antigen (PSA) levels significantly decreased from 36.6 +/- 19.3 to 1.1 +/- 0.3 ng/ml after Goserelin acetate treatment (P = 0.005). Significant changes occurred in the fibrinolytic parameters. GnRH agonists decreased plasma t-PA Ag levels (16.3 +/- 4.9 vs. 12.2 +/- 2.8 ng/ml, P = 0.047) and increased PAI-1/t-PA molar ratio (4.8 +/- 3.6 vs. 6.6 +/- 3.4, P = 0.16), on the other hand, plasma PAI-1 Ag (59.0 +/- 48.5 vs. 56.4 +/- 30.5 ng/ml, P = 0.8), and TAFI levels (130.6 +/- 9.5 vs. 124.2 +/- 26.5% activity, P = 0.3) did not change significantly. CONCLUSION: This study provides evidence that GnRH agonists may inhibit fibrinolytic system by decreasing t-PA levels.

The Eating Attitudes Test (EAT) in Turkish university students: relationship with sociodemographic, social and individual variables.

OBJECTIVE: The primary purpose of this study was to establish the frequency of abnormal eating attitudes and behaviours, as measured by the Eating Attitude Test (EAT 40) in a sample of Turkish university students and to examine the relationship of such abnormalities to socio economic status, social and individual variables. METHOD: The EAT 40, two other questionnaires and a personal data sheet were administered to a sample of 253 female undergraduates at Bogazici and Marmara Universities in Istanbul, Turkey. RESULTS: Using the EAT 40 cut-off score of 30 established by (16) 7.9% of subjects were classified as having abnormal eating attitudes and behaviours. This subgroup of subjects was then compared with the remainder on all the other measures. No group differences were found for any of the SES variables. However, both social and individual variables were found to distinguish between groups in the predicted directions. DISCUSSION: Abnormal eating attitudes and behaviours are now as common in Turkish students as they are in many other comparable western and, increasingly, non-western societies. In the current student sample these attitudes and behaviours were found to be related to social factors such as the perceived traditionality of parents as well as to individual risk factors such as negative perfectionism.

Factor structure of the Eating Attitudes Test (EAT) in a Turkish university sample.

OBJECTIVE: The primary purpose of this study was to compare the factor structure of the Eating Attitudes Test (EAT) in a sample of Turkish university students with both that of the original Canadian study and that of a Turkish study conducted ten years earlier. METHOD: The EAT 40 was administered to a sample of 270 female undergraduates at the Bogazici and Marmara universities in Istanbul, Turkey. RESULTS: The factor structure produced more closely resembled the original than did that of the study conducted ten years ago. Of particular note was the presence of a bulimia factor which had not emerged in the previous Turkish study, together with a new factor labelled "Ambivalence about Eating". DISCUSSION: Comparison of the two Turkish studies highlights the emergence of a bulimia factor not present ten years ago. This reflects clinical experience. Moreover the new Ambivalence about Eating factor is discussed in terms of the transitional nature of Turkish society and the role of a culture clash between traditional and westernized attitudes towards food. It is therefore predicted that the prevalence of eating disorders in Turkish culture will dramatically increase in the foreseeable future.

Mammographic changes in women receiving tibolone therapy.

OBJECTIVE: To investigate the effects of tibolone therapy for menopausal symptoms on mammographic findings and to identify any association between mammographic changes and the demographic and hormonal characteristics of women receiving tibolone. DESIGN: A prospective study. SETTING: A university hospital. PATIENT(S): Seventy-five women who were in the climacteric or postmenopausal period were recruited, and 25 of them were followed up for 24 months. INTERVENTION(S): After high-resolution mammographies were performed and blood samples were collected, tibolone (2.5 mg/d) was administered orally to all patients. At the end of the 24-month follow-up period, blood samples were collected again and mammographies were repeated. MAIN OUTCOME MEASURE(S): Serum levels of LH, FSH, prolactin, estradiol, testosterone, and DHEAS were determined from the collected samples, and mammographies were interpreted. RESULT(S): At the end of the 24-month follow-up period, mammographic changes were observed in only two women (8%). Women who had no change in mammography constituted group I (n = 23). Women who had a change constituted group II (n = 2). Although the initial hormone levels were not different, the increase in serum DHEAS in group I was significantly higher than in group II (z = 2.30, P = 0.021). CONCLUSION(S): The frequency of mammographic changes in women receiving tibolone therapy was found to be 8% at the end of the 24-month follow-up. The serum DHEAS level may be an important hormonal marker complementary to mammographic screening for women receiving tibolone therapy. We strongly believe that tibolone is safe in terms of mammographic changes in postmenopausal women.

Mammographic changes in women on hormonal replacement therapy.

OBJECTIVES: In the present retrospective study, we aimed to determine the frequency and the types of mammographic changes of breast parenchyma in women receiving hormone replacement therapy (HRT). We also investigated whether there was an association between mammographic changes and some clinical and hormonal characteristics of the women on HRT. METHODS: One-hundred and eight women were included into the study. Of the 108 women, 19 were climacteric, four premature menopause, 50 spontaneous menopause and 35 surgical menopause. Prior to the start of HRT, an initial mammography was performed and it was repeated at 6- to 18-month intervals according to the women's status. Estrogen alone was started for 35 surgical menopause women and a combination of estrogen plus progesterone for the remaining 73 women. RESULTS: Group I consisted of 96 women with no parenchymal changes or a decrease in parenchymal density on mammography, whereas group II consisted of 12 women with an increase in parenchymal density (11%) during the mean period of 24 months. Endogenous E2 levels were significantly higher in group II than in group I (52.4 +/- 42.3 pg/ml vs. 32.3 +/- 29.3 pg/ml, P < 0.05). Climacterium or types of menopause did not affect the mammographical density changes. Neither the type nor the duration of HRT had an effect on mammographic density increase. CONCLUSIONS: We concluded that the endogenous E2 level might be an important role in screening the women mammographically. Long-term follow-up studies were concluded to be needed in order to evaluate the effects of HRT on mammographic changes.

[Malignant melanoma of the choroid in vivo. Comparative biometry using RX scanner and MRI]. / Contribution à l'étude du mélanome malin de la choroïde in vivo. Biométrie comparée par scanner RX et IRM.

Uveal melanomas are unique among the malignant tumors of the eye investigated by MRI in that both T1 and T2 are relatively shortened due to the paramagnetic effect of melanin. Bearing in mind this property, we conducted a comparative study between MRI and CT in 11 patients with histologically proven choroidal malignant melanoma. The results of this study confirm that MRI is far superior to CT in both differential diagnosis and in determining the extent of the tumor which is crucial if conservative treatment is to be undertaken.

CT and MRI in hydatid disease of cervical vertebrae.

Hydatid disease (HD) of the cervical spine is rare. A case investigated by computed tomography (CT) and magnetic resonance imaging (MRI) is presented. While CT shows the bone lesion better, MRI is superior in demonstrating compression of neural structures. The complementary use of CT and MRI in such cases is suggested.