Tuncer Karayel
Istanbul University
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Tuncer Karayel.
Respirology | 2001
Ali Mert; Muammer Bilir; Fehmi Tabak; Resat Ozaras; Recep Ozturk; Hakan Senturk; Hilal Aki; Nur Seyhan; Tuncer Karayel; Yildirim Aktuglu
Objective: The aim of the study was to determine the clinical, radiographic and laboratory characteristics, diagnostic methods, and prognostic variables in patients with miliary tuberculosis (TB).
Respiratory Medicine | 2003
Halil Yanardag; Ömer Nuri Pamuk; Tuncer Karayel
In our study, we retrospectively evaluated the clinical features of patients diagnosed as sarcoidosis at our center within the last 36 years and who had skin involvement. Cutaneous involvement was observed in 170 patients (32.9%, 136 females, 34 males). The most frequent skin lesion was erythema nodosum (EN) (106 subjects, 20.5%). In addition, skin plaques and subcutaneous nodules were observed in 22 cases (4.3%), maculopapular eruptions in 19 cases (3.7%), scar lesions in 15 cases (2.9%), lupus pernio (LP) in 14 cases (2.7%) and psoriasiform plaques in five cases (0.9%). Among patients with LP (64.3%) and scar lesions (40%), pulmonary parenchymal involvement was more frequent than patients with other skin lesions. Parenchymal involvement present in 10.4% of patients with EN was significantly less than in patients with LP and scar lesions (P values, respectively, <0.001, 0.002). When patients with skin involvement were compared to other sarcoidosis patients, it was seen that the frequency of females among those with skin involvement was significantly higher than the frequency among other sarcoidosis patients (P<0.001). Parenchymal involvement in sarcoidosis patients without skin involvement was less frequent than in patients with LP; however, more frequent than in patients with EN (both P values=0.002). As a conclusion, skin involvement was diagnosed in approximately one-third of our sarcoidosis patients with a generally female predominance. EN was the most frequent skin lesion encountered. Parenchymal involvement was more frequent in patients with LP and scar lesions and less frequent in patients with EN.
Journal of Bone and Mineral Metabolism | 2004
Sevtap Sipahi; Sansin Tuzun; Resat Ozaras; Havva Talay Calis; Nihal Ozaras; Fikret Tüzün; Tuncer Karayel
Sarcoidosis is a multisystem granulomatous disease of unknown etiology. Almost any organs of the body, but mostly the lungs, are involved. Bone mineral density (BMD) can be affected directly or indirectly in chronic granulomatous systemic diseases such as sarcoidosis. The aim of our study was to evaluate BMD in premenopausal and postmenopausal sarcoidosis patients with or without prednisone treatment and to compare their BMD values with those of a control group having the same menopausal status. Thirty-five premenopausal women (18 untreated, 8 treated, and 9 controls) and 21 postmenopausal women (5 untreated, 5 treated, and 11 controls) were included in the study. All of the patients had a histologically proven diagnosis and were being followed-up at the Sarcoidosis Outpatient Clinic of our unit. BMD of the lumbar (L) spine and femoral neck was measured by dual-energy absorptiometry (DEXA). The subgroups of premenopausals and postmenopausals were compared separately. Comparison among the groups was performed by using analysis of variance. Age, duration of the disease, and body mass index were comparable in treated, untreated, and control subgroups of the pre- and postmenopausal groups, and the subgroups of postmenopausals had comparable durations since menopause. For premenopausals, BMD values at L1–4 were not significantly different among the subgroups (0.920 ± 0.08 g/cm2, 0.801 ± 0.09 g/cm2, and 0.910 ± 0.05 g/cm2, for untreated, treated, and controls, respectively). However, the BMD value at the femoral neck in treated patients (0.921 ± 0.1 g/cm2) was significantly lower than the values in untreated patients (1.080 ± 0.2 g/cm2; P ≪ 0.01) and in controls (1.028 ± 0.17 g/cm2; P ≪ 0.05). For postmenopausals, the BMD value at L1–4 in controls (1.019 ± 0.07 g/cm2) was significantly higher than the values in untreated patients (0.783 ± 0.01 g/cm2) and in treated patients (0.751 ± 0.08 g/cm2; P ≪ 0.001 for both). The BMD value at the femoral neck in controls (0.890 ± 0.1 g/cm2) was higher than the values in untreated patients (0.745 ± 0.08 g/cm2) and treated patients (0.747 ± 0.1 g/cm2), but the difference was not statistically significant (P = 0.06). We concluded that sarcoidosis patients, especially postmenopausal patients with corticosteroid treatment, may have an increased risk of bone mineral loss. Large-scale studies are warranted in order to delineate the exact roles of the disease itself, menopausal status, and corticosteroid treatment in this bone mineral loss.
Canadian Respiratory Journal | 2007
Halil Yanardag; Metin Caner; Irfan Papila; Sedat Uygun; Sabriye Demirci; Tuncer Karayel
A peripheral lymph node (PLN) 1 cm or greater was found in 79 of 546 sarcoidosis patients (14.5%) between 1972 and 2005. Seventy-two of the 79 sarcoidosis patients had a lymph node biopsy performed. Sixty-seven of these biopsy specimens were histologically diagnosed as sarcoidosis, whereas five patients had a reactive adenopathy. For patients with histological diagnosis of sarcoidosis, localizations of the biopsies were as follows: cervical (n=21), supraclavicular (n=20), inguinal (n=11), axillary (n=8), epitrochlear (n=5) and submandibular (n=2). At the time of biopsy, 12 patients had stage 0 disease, 37 patients had stage I disease, 14 patients had stage II disease and four patients had stage III disease. Skin involvement (16.4%) was the most frequently observed type of organ involvement in patients who had enlarged PLNs due to sarcoidosis. In the presence of an enlarged PLN in sarcoidosis, biopsy had a greater diagnostic value compared with other methods, as well as having a relatively low cost (approximately US
Canadian Respiratory Journal | 2003
Halil Yanardag; Cuneyt Tetikkurt; Seza Tetikkurt; Sabriye Demirci; Tuncer Karayel
120) in Turkey. No procedure-related complications were observed. In conclusion, it is recommended that PLNs be thoroughly examined when sarcoidosis is suspected. If an enlarged PLN is found, biopsy should be routinely performed because it is an easy, convenient and practical method, with a low complication risk and a high sensitivity.
Otolaryngology-Head and Neck Surgery | 2006
Halil Yanardag; Murat Enoz; Irfan Papila; Sedat Uygun; Metin Caner; Tuncer Karayel
BACKGROUND The therapeutic response to endobronchial tuberculosis is usually evaluated by bronchoscopy. Currently, there are no published studies investigating the use of computed tomography for the evaluation of therapeutic response in endobronchial tuberculosis. OBJECTIVE A retrospective study was performed to evaluate the bronchoscopic and computed tomographic features of endobronchial tuberculosis before and after treatment. The aim of this study was to investigate the usefulness of computed tomography for the assessment of treatment. METHODS The clinical, pathological and bronchoscopic features of endobronchial tuberculosis were evaluated in 55 patients. The age range of the patients was 21 to 52 years. Computed tomography and bronchoscopy were performed before and after treatment. RESULTS Diagnosis of tuberculosis was confirmed by culture and histopathological examination. Bronchoscopic examination revealed 89 endobronchial lesions of various types in 55 patients. The exudative type was the most common. Follow-up bronchoscopy revealed that exudative-, ulcerative- and granular-type lesions healed completely. Computed tomography performed after treatment correlated well with the follow-up bronchoscopic findings. CONCLUSION The results suggest that follow-up computed tomography is useful for the evaluation of therapeutic response and complications associated with endobronchial tuberculosis, and may replace bronchoscopy.
Indian Journal of Pediatrics | 2006
Halil Yanardag; Ömer Nuri Pamuk; Sedat Uygun; Sabriye Demirci; Tuncer Karayel
PRINCIPLES AND METHODS: Upper respiratory tract (URT) involvement is rare in sarcoidosis. In this descriptive study, we retrospectively evaluated the clinical and demographic features of 12 (2.19%) patients with URT involvement out of the 546 sarcoidosis patients with follow-up visits at our center within the last 40-year period. RESULTS: Out of the 546 patients, 12 (2.19%) had upper respiratory tract involvement, 5 (0.91%) had laryngeal involvement, 4 (0.73%) had sinonasal tract involvement, 2 (0.36) patients had salivary gland involvement, and 1 patient had tonsillary involvement. The number of stage 0 subjects among other sarcoidosis patients was significantly lower than that among those with URT involvement. CONCLUSIONS: URT involvement is rarely diagnosed in patients with systemic sarcoidosis. The most common site for URT involvement among the Turkish population is the larynx, followed by the sinonasal tract. EBM rating: C-4
Respirology | 2007
Sevtap Sipahi Demirkok; Metin Basaranoglu; Elif Çoker; Tuncer Karayel
Objective: To compare the features of sarcoidosis in children to those of adults. In spite of the fact that sarcoidosis is a disease frequently seen in adults of 30–40 years, pediatric cases have rarely been reported.Methods: The authors evaluated 17 (3.3%, 12 females, 5 males) of the 516 patients of sarcoidosis, aged 16 yr and diagnosed within a 36-year period.Results: When the features of sarcoidosis subjects diagnosed during the childhood period were compared to those of subjects >16 years of age, it was seen that patients with advanced stage of the disease were more in the first group (41.2%vs 18%, p=0.02). In addition, children had more frequent extrapulmonary (64.7%vs 40.3%) and lacrimal gland involvement (p values, respectively, 0.044 and 0.003).Conclusion: When clinical data are relevant, sarcoidosis should be borne in mind. A child with sarcoidosis has more frequent pulmonary parenchymal and extrapulmonary involvement than in adults.
Respirology | 2006
Sevtap Sipahi Demirkok; Metin Basaranoglu; Emine Dervis; Mert Bal; Tuncer Karayel
Background and objectives: Sarcoidosis is a systemic granulomatous disease of unknown aetiology and pathogenesis. This study evaluated the seasonal variation in the onset of symptoms, Tuberculin anergy and Kveim positive reaction in a cohort of 492 patients with sarcoidosis and in a subgroup of 248 patients with known Kveim test responses.
Respiration | 1986
Seyhan I. Çelikoğlu; Talia B. Aykan; Tuncer Karayel; Sabriye Demirci; Fahir M. Göksel
Background and objective: Sarcoidosis is a multisystem disease of unknown aetiology. The seasonality of sarcoidosis in symptomatic, recently diagnosed patients with Löfgren’s syndrome was evaluated to help better understand the possible causative factor(s) in the pathogenesis of sarcoidosis.