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Objective: To evaluate the prognostic significance of neutrophil-to-lymphocyte ratio (NLR) in giant cell tumor of bone (GCT). Methods: The patients with GCT were identified in the hospital records and pre-treatment complete blood count results were acquired retrospectively. Whether preoperative NLR lymphocyte-to-monocyte ratio (LMR) and platelet-to-lymphocyte ratio (PLR) values had prognostic significance in predicting recurrence was evaluated by Receiver operating curve (ROC) analysis. Furthermore, the prognostic value of NLR was evaluated by Multivariable Cox Regression analysis. Results: There were 96 patients with GCT. It was found that only NLR values had prognostic significance for predicting recurrence (AUC:0.647; 95% CI:0.533-0.762; P=0.021). The statistically significant cut-off value of NLR for predicting re- currence was ≥2.25.NLR was ≥2.25 in 51% (n = 49) of patients. Multivariable analysis showed that NLR ≥2.25 (HR=2.9, 95% CI:1.3-6.6; p=0.009) and lung metastasis (HR=7.9, 95% CI:2.2-28.2; p=0.001) were independent factors of recurrence. In patients with lung metastasis and patients with NLR ≥2.25, recurrence was observed in a sooner period (Log rank test; p=0.001; p=0.009, respectively). Conclusion: Our findings showed that NLR is a new and promising inflammation-based prognostic factor in GCT patients. Keywords: Giant cell tumor of bone; neutrophil-to-lymphocyte ratio; prognostic significance.

Objectives This study aims to investigate the characterization and follow-up results of tumors and tumor-like lesions in the talus. Patients and methods Twenty-one patients (15 males, 6 females; mean age: 31.6±17 years; range, 4 to 67 years) with benign and malignant tumors or tumor-like lesions in the talus region treated and followed in our clinic between January 2007 and January 2019 were evaluated retrospectively. Radiological, pathological, surgical, and demographic features were scanned from the database. Results Patients were followed for mean 80±45.1 (range, 25 to 156) months. The most common complaint was pain and antalgic gait. Benign bone tumors were found in 15 (71%) of 21 patients, while tumor-like lesions (two intraosseous ganglia, osteomyelitis, and bone infarction) were found in four patients. The remaining two were patients with lung and bladder cancer metastasis. Lesion size was mean 2.1±0.5 (range, 1.1 to 3.3) cm. Recurrence developed in 14.3% (n=3) of the patients during follow-up. Conclusion The talus is a rare location for tumors; however, benign and malignant tumors and tumor-like lesions may be localized in the talus.

Objectives This study aims to investigate the diagnostic and prognostic role of mean platelet volume (MPV) and MPV/platelet (PLT) ratio in primary malignant bone tumors. Patients and methods We retrospectively investigated patients with primary malignant bone tumors between January 2010 and January 2019 and included 109 patients (69 males, 40 females; mean age: 41.9±17.9 years; range 15 to 86 years) in the study. A total of 107 healthy volunteers (61 males, 46 females; mean age: 47 years; range 19 to 61 years) who donated blood to the blood center of our hospital in 2019 formed the control group. Demographic features, MPV, PLT counts, mortality, and recurrence records of the patients were obtained from archives. Results Of the 109 patients, 11 were diagnosed with Ewing’s sarcoma, 52 with chondrosarcoma, and 46 with osteosarcoma. The tumor was located on the right in 56% of patients and on the lower extremity in 59.6% of patients. The recurrence rate was 41.3% in the patient group. Of the 109 patients, 17 (15.6%) resulted in exitus at follow-up. The mean PLT value of the patient group was significantly higher than the control group (289,440 vs. 247,299, p9.25 fL for MPV (sensitivity=74%, specificity=85%, positive likelihood ratio=4.96, positive predictive value=83.4%, and negative predictive value=76.5). Conclusion Consequently, MPV and MPV/PLT ratios can be used as a diagnostic support parameter in primary malignant bone tumors, but have no prognostic value.

Introduction: The Barthel Index of Activities of Daily Life (ADL) is a scale used to evaluate performance in daily life activities and investigate the reason and resulting relationships in a comprehensive, non-biased manner. Aim: The aim of this study was to compare the daily life activities of patients who underwent proximal femoral tumor resection prosthesis assessed by the Barthel Index with the activities of daily living of patients with a total hip prosthesis performed for non-tumor reasons. Materials and methods: Twenty-eight patients were included in the study. Sixteen patients underwent hip prosthesis for reasons other than tumor (femur proximal avascular necrosis, coxarthrosis, etc.) and 12 underwent wide resection and femur proximal tumor resection prosthesis due to primary malignant bone tumor or metastasis in the proximal femur. The Barthel Index was used to evaluate their life quality at 3 months. Results: A total of 28 patients (mean age 60.9±1.4 yrs, range 19.0-84.0, 17 female and 11 male patients) were included into the study. Mean ADL score was 84.5±20.6 (5–100.0). While only one patient was totally dependent in terms of daily life activities, 8 other patients were totally independent. When the patient groups were categorized by degree of dependency according to the ADL scores, it was found that dependency states of the two surgery groups were similar in distribution (p=0.212, p=0.703, and p=1.000 respectively). Conclusion: Functional recovering levels were good in the patients who underwent a surgery for proximal femoral tumor resection prosthesis; there was no significant difference when we compared the functional level after total hip prosthesis applied for non-tumor reasons.

Aim: The aim of this study is to investigate the diagnostic role of Neutrophil-to-lymphocyte ratio (NLR), Monocyte-to-lymphocyte ratio (MLR) and Platelet-to-lymphocyte ratio (PLR) in patients with lipoma and liposarcoma. Material and Methods: Patients operated for lipoma and liposarcoma at our institution between 2015 and 2019 were included in this retrospective study. A total of 92 patients with 44 lipoma and 48 liposarcoma were included in this study. The results of the complete blood count before treatment were retrospectively analyzed. 94 patients with complete blood count results admitted to the same center for reasons other than fracture, infection or tumors with similar age and sex to the aforementioned study group were included as healthy controls. Results: The average age of lipoma, liposarcoma and control groups included in the study was 55.3 ± 11.6, 48.9 ± 14.7 and 52.1 ± 11.7, respectively. While 50% of lipomas are located on the thigh and 40.9% are on the shoulder, 72.9% of the liposarcomas are located on the thigh. NLR values of the liposarcoma group were significantly higher than the control group. It was observed that PLR values did not differ significantly between groups. It was noted that MLR values were statistically significantly higher in the liposarcoma group than in the lipoma group. A significant but weak AUC value (AUC = 0.620, p = 0.020) was obtained for NLR. When the cut-off value and sensitivity, specificity, + LHR, PPV and NPV values of these cut off values are examined, NLR 1.83 and above values; It pointed out that his predictability was poor in the diagnostic approach for liposarcoma. Conclusion: Consequently, lipoma and liposarcoma are the most common forms of benign and malignant soft tissue tumors. NLR and MLR may be valuable in the diagnosis of liposarcoma, but more studies are needed in this regard.

Objectives: This study aims to evaluate the role of elevated neutrophil-to-lymphocyte ratio (NLR) and monocyte-tolymphocyte ratio (MLR) in differential diagnosis of enchondroma and low-grade chondrosarcoma. Patients and methods: One-hundred-and-one patients (44 males, 57 females; mean age 53.6±11.5 years; range, 21 to 85 years) diagnosed with enchondroma and low-grade chondrosarcoma in Ankara Oncology Training and Research Hospital between January 2010 and December 2019 were included in this retrospective study. Patients' age, gender, location and type of tumor, and pre-treatment complete blood count results were acquired. One-hundred patients (48 males, 52 females; mean age 50.9±13.6 years; range, 19 to 76 years) with complete blood count results admitted to the same center for reasons other than fracture, infection or tumors with similar age and gender to the aforementioned study group were included as healthy controls. Results: Neutrophil-to-lymphocyte ratio and MLR of the study group were found to be significantly higher than the control group (p

Objectives This study aims to investigate the characterization, treatment approaches, and follow-up results of tumors and tumor-like lesions located in the pelvic ramus. Patients and methods Thirty-one patients (9 males, 22 females; mean age 48.9 years; range, 7 to 79 years) with benign and malignant tumors or tumor-like lesions in the pelvic ramus region treated and followed-up in our clinic between January 2005 and January 2019 were evaluated retrospectively. Surgical procedures were performed with anterior approach or inner-thigh approach. Twelve patients were diagnosed with malignant tumors, 12 patients with benign tumors, and seven patients with tumor-like lesions. Results Seventeen patients who underwent surgical treatment were followed-up for a mean period of 61.7 months. The diameters of benign and malignant tumors were similar (p=0.425). Of all lesions, 64.5% were located in the pubis. Ischium location was significantly higher in patients with malignant lesions than tumor-like lesions. The most common complication was diffuse subcutaneous edema in the inguinal region and thigh (8.3%). Conclusion There are many different tumoral lesions in the pelvic ramus. Pelvic ramus tumors tend to settle more frequently in pubic ramus, whereas ramus ischium tumors are more likely to be malignant. In addition, the diagnosis of insufficiency fracture should be considered primarily in pathologic fractures of pubic ramus in females over 50 years of age. In the postoperative follow-up of pelvic ramus tumors, diffuse edema may occur even if there is no intraoperative vascular damage.

The aim of this study was to examine the characterization of tumors and tumor-like lesions located in the clavicle and to present their clinical results.Between January 2006 and December 2018, a total of 44 patients (25 males, 19 females; mean age: 36.2±21.8 years; range, 2 to 87 years) who were operated in our clinic for a clavicular lesion were included. Among 4,856 extremity tumors operated in our clinic between these years, 44 cases (0.9%) located in the clavicle were eligible. Demographic data, tumor types, location, surgical method, metastasis, survival analyzes and clinical results of these patients were reviewed retrospectively. According to the clavicle location, the patients were divided into groups according to their involvement in proximal, middle, lateral and more than one region.The most frequently involved site was the lateral edge of the clavicle, and the most common tumor was aneurysmal bone cyst. The most common malignant tumor was Ewing sarcoma and plasmacytoma (13.6%) and the most common surgical method in the clavicle was wide resection with 34.1%. Of the 38 primary clavicle tumors remaining after the metastatic lesions were removed, 21 (55%) were benign, while 17 (45%) were malignant. Aneurysmal bone cyst was most common in the group under 30 years of age, osteochondroma was most common in the 30-50 age group, and plasmacytoma was most common in those over 50 years of age. The mean musculoskeletal tumor society (MSTS) score of 15 patients (34.1%) who underwent clavicle resection was 79.4±6.We believe that a wide spectrum should be considered in the differential diagnosis of tumors located in the clavicle. Age is an important predictive factor for malignancy. We believe that resection should be applied without fear considering its effects on function and recurrence.

Extraskeletal myxoid chondrosarcoma (EMC) is a rare soft tissue sarcoma. The aim of this study is to present the results of the patients we treated with the diagnosis of EMC as an oncology reference center.Information on 13 patients diagnosed with EMC between 2006 and 2018 was retrospectively reviewed. Patients' demographic information, tumor sizes, surgical treatments, chemotherapy and radiotherapy statuses, follow-up times, recurrences, and metastases were recorded.Mean patient age was 53.6 ± 15 years (range: 28-73). In 8 patients, the tumor was located in the lower limbs, most commonly in the thigh (46.2%). Mean follow-up period was 52.8 ± 19.9 (24-96) months. All patients underwent wide resections and only one had a positive surgical margin. In follow-up, 5 (38.5%) patients experienced recurrence; 6 patients had lung metastasis (46.2%) and 7 patients (53.8%) died. Mean tumor size was 10.4 ± 3.2 (5-17) cm. Median survival time was 61 (50.5-71.4) months and 5-year survival rate was 51.8%. There was no significant difference between survival times according to age, gender, side, limb location, postoperative radiotherapy, recurrence, or presence of lung metastasis. The cut-off value for death obtained by ROC analysis of tumor size was 11 cm.EMC is a rare soft tissue sarcoma with high local recurrence and metastasis capacity. Tumor size and metastatic disease are poor prognostic criteria. If it is a localized disease, the first option should be wide resection.

Bu yazi, norofibromatozis (NF) ozellikleri olmayan bir multiple schwannoma olgusu raporudur. Hastane bilgi sistemi kayitlari ve hasta dosyasindan hastanin oykusu, fizik muayene bulgulari, radyolojik ve histopatolojik inceleme bulgulari incelendi. Hastanin ve ailesinin NF oykusu yoktu. Semptomatik lezyonlarin tumune total eksizyon yapildi. Histopatolojik inceleme, tum lezyonlari schwannom olarak dogruladi. Hastanin post-operatif on ikinci ayinda yeni lezyonu yok ve yasamindan memnundur. Norofibromatozis tip 2 ile iliskisiz olup, multipl lezyonlar seklinde ortaya cikan schwannomlar nadirdir. Yazarlar semptomatik lezyonlarda cerrahi eksizyon onermektedir.

The aim of this study is to determine the treatment modalities and clinical characteristics of 12 patients diagnosed with giant cell tumor (GCT) of the hand and foot. The clinical findings, treatment modalities, and treatment failures of 12 patients with giant cell tumors of the hand and foot bones between 2007 and 2018 years were evaluated retrospectively. The average age at diagnosis was 29.2 ± 14.9 std. (between 16 and 62 years old), 8 males (66.6%) and 4 females (33.3%). Tumor was more frequently located in the talus, metacarpal, and metatarsal bones. The mean tumor size was 3.1 ± 1.1 cm (between 2.2 and 5.3 cm). The mean post-operative follow-up period was 76.3 ± 42.5 (between 12 and 139 months). The most of patients’ (58.3%) common complaints were pain. The most commonly used surgical method was curettage + autografting (91.7%). Infection was seen in one patient after relapse surgery. Recurrence occurred in 33.3% of the patients in the first year. Only one patient was detected to have knee and lung metastases. Swelling and pain in the hand and foot should be examined for tumor lesions. When a bone lesion is detected, the giant cell tumor of the bone should be included in the differential diagnosis. Patients with giant cell tumors should be followed closely for recurrence and metastasis after treatment.

Purpose To evaluate the clinical results of arthroscopic repair and open Ahlgren-Larsson method in patients with chronic lateral ankle instability. Methods We retrospectively evaluated 60 patients who were operated in our clinic between 2010 and 2018 with the diagnosis of chronic lateral ankle instability. Preoperative and postoperative clinical evaluations were performed with AOFAS ankle-hindfoot score, FAOS, and VAS scores. Results Sixty patients with chronic lateral ankle instability were evaluated. 28 patients were treated with Ahlgren-Larsson method, and 32 patients were treated with arthroscopic repair. Follow-up duration was 35 +/- 12 months for the open surgery group and 19 +/- 2 months for the arthroscopic surgery group. The mean age of the arthroscopy group was 44 +/- 9; the mean age of the open surgery group was 46 +/- 11. There was no significant difference between the groups in terms of demographic features (age, sex, BMI). Postoperative clinical improvement was observed in both groups. There was no statistically significant difference between the groups in terms of functionality. However, there was a statistically significant difference in VAS in terms of pain and patient satisfaction in favor of arthroscopy group. Conclusions Ahlgren-Larsson method and arthroscopic repair technique are safe and effective for chronic lateral ankle instability. Arthroscopic technique may be preferred for pain and patient satisfaction as it is less invasive and less morbid.