The role of volumetric method in the assessment of chemotherapy response and predicting survival in malignant pleural mesothelioma.

BACKGROUND: Malignant pleural mesothelioma (MPM) is a pleural tumor with high mortality rate and short-term survival expectancy after diagnosis. Assessment of the response to chemotherapy, which is the first choice in treatment of MPM, is important for the transition to alternative chemotherapy protocols and immunotherapy. There is no clarity in the response to chemotherapy treatment. OBJECTIVE: Our study aims to compare the assessment of chemotherapy response using the Modified Response Evaluation Criteria in Solid Tumors (mRECIST) criteria and volumetric measurements and to correlate with median survival. MATERIALS AND METHODS: Thirty-two patients (16 females and 16 males) were included in the study, and their ages ranged from 28 to 78 years. Chemotherapy response was determined by both mRECIST and volumetric approach. Tumor volume was measured by linear interpolation and semi-automatic segmentation. Log-rank multiple cutoff analysis was used to determine appropriate cutoff values of volumetric response criteria. RESULTS: According to both mRECIST and volumetric approach, median survival times in partial response, stable disease, and progressive disease groups were 24, 15, and 9 months, respectively. The survival times of the three groups were different (logrank: 17.76; P < 0.001) by mRECIST. The survival of the progressive disease group was shorter than that of the other groups (logrank: 18.91; P < 0.001) by volumetric approach. CONCLUSIONS: In the assessment of chemotherapy response, even though classifications obtained according to the mRECIST criteria and volumetric measurements are statistically compatible, we think that the measurement of the volumetric values will increase the standardization. In our study, threshold values for volumetric measurements were determined; however, these values should be supported by large-scale multicenter studies.

CT Scan-Guided Abrams' Needle Pleural Biopsy versus Ultrasound-Assisted Cutting Needle Pleural Biopsy for Diagnosis in Patients with Pleural Effusion: A Randomized, Controlled Trial.

BACKGROUND: Image-guided pleural biopsies, both using ultrasound (US) or computed tomography (CT), are important in the diagnosis of pleural disease. However, no consensus exists regarding which biopsy needles are appropriate for specific procedures. OBJECTIVES: In this randomized, prospective study, we aimed to compare CT scan-guided pleural biopsy using an Abrams' needle (CT-ANPB) with US-assisted pleural biopsy using a cutting needle (US-CNPB) with respect to both diagnostic yield and safety. METHODS: Between February 2009 and April 2013, 150 patients with exudative pleural effusion who could not be diagnosed by cytological analysis were included in the study. The patients were randomized into either the US-CNPB group or the CT-ANPB group. The two groups were compared in terms of diagnostic sensitivity and complications. RESULTS: Of the 150 patients enrolled in this study, 45 were diagnosed with malignant mesothelioma, 46 were diagnosed with metastatic pleural disease, 18 were diagnosed with pleural tuberculosis, 34 were diagnosed with benign pleural disease, and 7 were lost to follow-up. In the US-CNPB group, the diagnostic sensitivity was 66.7%, compared with 82.4% in the CT-ANPB group; the difference between the two groups was statistically significant (p = 0.029). The sensitivity of CT-ANPB increased to 93.7% for patients with a pleural thickness ≥1 cm. The complication rates were low and acceptable. CONCLUSIONS: The first diagnostic intervention that should be preferred in patients with pleural effusion and associated pleural thickening on a CT scan is CT-ANPB. US-CNPB should be used primarily in cases for which only pleural thickening but no pleural effusion is noted.

A study on the evaluation of pneumothorax by imaging methods in patients presenting to the emergency department for blunt thoracic trauma.

BACKGROUND: Pneumothorax (PNX) is the collection of air between parietal and visceral pleura, and collapsed lung develops as a complication of the trapped air. PNX is likely to develop spontaneously in people with risk factors. However, it is mostly seen with blunt or penetrating trauma. Diagnosis is generally confirmed by chest radiography [posteroanterior chest radiography (PACR)]. Chest ultrasound (US) is also a promising technique for the detection of PNX in trauma patients. There is not much literature on the evaluation of blunt thoracic trauma (BTT) and pneumothorax (PNX) in the emergency department (ED). The aim of this study was to investigate the effectiveness of chest US for the diagnosis of PNX in patients presenting to ED with BTT. METHODS: This study was carried out for a period of nine months in the ED of a university hospital. The chest US of patients was performed by emergency physicians trained in the field. The results were compared with anteroposterior chest radiography and/or CT scan of the chest. The APCR and chest CT results were evaluated by a radiology specialist blind to US findings. The evaluation of the radiology specialist was taken as the gold standard for diagnosis by imaging methods. Clinical follow-up was taken into consideration for the diagnosis of PNX in patients on whom CT scan was not performed. RESULTS: Chest US was performed on all two hundred and twelve patients (144 female and 68 male patients; mean age 45.8) who participated in this study. The supine APCR was performed on two hundred and ten (99%) patients and chest CT was performed on one hundred and twenty (56.6%). Out of the twenty-five (11.8%) diagnosed cases of PNX, 22 (88%) were diagnosed by chest US and 8 were diagnosed by APCR. For the detection of PNX, compared to clinical follow-up and chest CT, the sensitivity of chest US was 88%, specificity 99.5%, positive predictive value 95.7% and negative predictive value 98.4%. CONCLUSION: Chest US has not superseded supine and standing chest radiography for PNX diagnosis yet in many healthcare centers, but it is performed by emergency physicians and it is an effective and important method for early and bedside diagnosis of PNX.

Medical thoracoscopy vs CT scan-guided Abrams pleural needle biopsy for diagnosis of patients with pleural effusions: a randomized, controlled trial.

BACKGROUND: In cases of pleural effusion, tissue samples can be obtained through Abrams needle pleural biopsy (ANPB), thoracoscopy, or cutting-needle pleural biopsy under the guidance of CT scan (CT-CNPB) for histopathologic analysis. This study aimed to compare the diagnostic efficiency and reliability of ANPB under CT scan guidance (CT-ANPB) with that of medical thoracoscopy in patients with pleural effusion. METHODS: Between January 2006 and January 2008, 124 patients with exudative pleural effusion that could not be diagnosed by cytologic analysis were included in the study. All patients were randomized after the CT scan was performed. Patients either underwent CT-ANPB or thoracoscopy. The two groups were compared in terms of diagnostic sensitivity and complications associated with the methods used. RESULTS: Of the 124 patients, malignant mesothelioma was diagnosed in 33, metastatic pleural disease in 47, benign pleural disease in 42, and two were of indeterminate origin. In the CT-ANPB group, the diagnostic sensitivity was 87.5%, as compared with 94.1% in the thoracoscopy group; the difference was not statistically significant (P = .252). No difference was identified between the sensitivities of the two methods based on the cause, the CT scan findings, and the degree of pleural thickening. Complication rates were low and acceptable. CONCLUSION: We recommend the use of CT-ANPB as the primary method of diagnosis in patients with pleural thickening or lesions observed by CT scan. In patients with only pleural fluid appearance on CT scan and in those who may have benign pleural pathologies other than TB, the primary method of diagnosis should be medical thoracoscopy. TRIAL REGISTRATION: clinicaltrials.gov; Identifier: NCT00720954.

Three-dimensional evaluation of chemotherapy response in malignant pleural mesothelioma.

OBJECTIVES: Measurement of tumor response to chemotherapy in malignant pleural mesothelioma (MPM) is problematic because of non-spherical tumor growth patterns and difficulty in choosing target lesion. In this study, we aimed to determine the effectiveness of tumor volume measurement for evaluating chemotherapy response. METHODS: Fifty-seven MPM patients were included. Chemotherapy responses were evaluated by computed tomography (CT) using volumetric method, World Health Organization (WHO), and modified Response Evaluation Criteria in Solid Tumor (RECIST). The tumor volume was measured using the Cavalieri principle of stereological approaches. RESULTS: According to the volumetric method, median survival was 10.0 months for progressive disease (PD), 14.0 months for stable disease (SD) and 16.0 months for objective response (OR). According to the WHO method, median survival was 11.3, 14.0, and 13.0 months, respectively. For modified RECIST, median survival was 10.0, 14.0, and 14.0 months, respectively. The correspondence between the WHO and modified RECIST methods was substantial (K=0.66), as was that between the volumetric and WHO methods (K=0.64); however the correspondence between the volumetric and modified RECIST methods was only moderate (K=0.52). CONCLUSIONS: The most suitable chemotherapy response measurement technique is the volumetric method because of non-spherical tumor growth patterns in MPM. However, larger studies should be performed to better establish the suitability of this method. We recommend our method for determining the chemotherapy response in mesothelioma cases. However, modified RECIST criteria can also be applied due to favourable prediction of survival, ease of application, and moderate correspondence with the volumetric method.

Irreversiblity of remodeled features on high-resolution computerized tomography scans of asthmatic patients on conventional therapy: a 6-year longitudinal study.

Airway remodeling can be assessed using high-resolution computerized tomography (HRCT) scanning of both parenchymal-and airway abnormalities in patients with asthma. The aim of this study was to examine structural changes in large and small airways of asthmatic patients using HRCT to determine if remodeling changes had occurred after prolonged use of conventional anti-asthma therapy. HRCT scans were evaluated prospectively for evidence of the following abnormalities: bronchial wall thickening (BWT), bronchiectasis, mucoid impactions, small centrilobular opacities, thick linear opacities, focal hyperlucency, and emphysema. Fifty mild and moderate asthmatics were enrolled in the study group. These abnormalities were re-evaluated in the patients after the passage of 6 years of regular anti-asthma medication. Forty-six of the patients completed the study. The probability of finding at least one abnormality by HRCT investigation was statistically higher in the second scan than in the first (26 patients [56.5%] versus 18 patients [39.1%], p = 0.02]. Irreversibility ratios of abnormalities were 80%, 100%, 75%, 87.7%, 77.8%, and 100% for BWT, bronchiectasis, small centrilobular opacities, focal hyperlucency, thick linear opacity, and emphysema, respectively. The ratios for newly detected structural abnormalities were 25%, 2.5%, 0%, 7.9%, 8.1%, and 0% for BWT, bronchiectasis, small centrilobular opacities, focal hyperlucency, thick linear opacity, and emphysema, respectively. New occurrences and progression in BWT are associated with the duration of asthma affliction (p = 0.03). The results of our study indicate that HRCT remodeling features, once occurring, are irreversible in most of the patients, and new remodeling features also occur despite administering the standard asthma treatment.

Detecting extrathoracic metastases in patients with non-small cell lung cancer: Is routine scanning necessary?

There is controversy over whether to scan extrathoracic sites for metastases in patients with non-small cell lung cancer (NSCLC). We tested the efficiency of clinical factors to determine whether metastasis has occurred, and whether routine scanning for NSCLC is required. Nine hundred and forty five patients scanned for extrathoracic metasates were included. Clinical factors indicating metastasis were determined using multivariate analysis. Of the 945 cases, 377 (39.9%) had metastasis. Bone metastases were determined by focal skeleton pains, elevated serum alkaline phosphatase levels, adenocarcinoma, KPS500 IU, a N2 or N3 case, KPS

Peripheral intrapulmonary lipoma: a case report and review of the literature.

Lipomas are common benign tumours, but intrathoracic lipomas are rare and peripheral lung lipomas are exceptionally rare. Eight cases have been described in the world literature. We report a case of lipoma arising in the periphery of the left lower lung in a 54-year old woman. Grossly, it was presented as a well- circumscribed, thinly encapsulated, rounded, pale yellow mass. A wedge resection was done of the left lung and the microscopic findings revealed lipoma of the lung. The present paper recapitulates the macroscopic and microscopic features, the treatment and the differential diagnosis of this rare neoplasm.

Cytomegalovirus-induced interstitial pneumonitis in a patient with dermatomyositis.

Dermatomyositis (DM) patients might present with pulmonary involvement as the first manifestation or during the follow-up period. It is sometimes difficult to determine whether the clinical manifestations related with pulmonary involvement are due to DM or to an infectious process. We report a case of DM patient who developed interstitial pneumonitis induced by cytomegalovirus (CMV) while receiving immunosuppressive treatment. To the best of our knowledge, this is the second report in the literature of interstitial pneumonitis secondary to CMV infection in a patient with DM.

[Recurrence rate after varicocelectomy in infertile men]. / Varikoselektomi geçirmis infertil erkeklerde rekürens sikligi.

PURPOSE: To detect the recurrence rate of varicocele in infertile men with varicocelectomy. MATERIALS AND METHODS: Twenty of 94 infertile patients with varicocelectomy were examined by color Doppler ultrasonography. RESULTS: We found 60% recurrence of varicocele infertile men with varicocelectomy. The mean time after varicocelectomy was five years for the patients with recurrence, and seven years for patients without recurrence. CONCLUSION: Doppler sonography is a useful imaging modality in the examination of post-varicocelectomy infertile men without successful impregnation.

[HRCT findings in congenital aural atresia]. / Dogumsal aural atrezide YRBT bulgulari.

PURPOSE: To define high resolution computed tomography findings in the external, middle and inner ear of patients with congenital aural atresia and to emphasize the importance of these findings in the preoperative evaluation. MATERIALS AND METHODS: Twenty one patients with congenital aural atresia (14 male, 7 female) aged between 1-30 years were evaluated with high resolution computed tomography of the temporal bone. A Toshiba TCT-600 scanner was used in 11 cases, and a Xvision/GX scanner was used in 10 cases. Sections 1 mm thick were obtained in axial and coronal projections using high bone detail algorithms. Sagittal reformations were also made when necessary. RESULTS: Forty-two ears in 21 patients with congenital aural atresia were studied. These included 8 patients with high bilateral and 13 with unilateral congenital aural atresia in which 8 patients had right sided and 5 patients had left sided atresia. Stenosis of the external auditory canal was found in 11 ears, complete atresia was found in 13 ears, incomplete atresia was found in 1 ear. There was varied ossicular deformity in 18 ears. Anomalies of the stapes and oval window were found in 6 ears. An anteriorly located mastoid segment of the facial nerve canal was identified in 11 ears. An inferiorly located tympanic segment of the facial nerve canal was identified in 2 ears, and 3 ears had an abnormal posterior orientation of the mandibular condyles. Only 2 patients had associated inner ear deformity. CONCLUSION: High resolution computed tomography is an effective method for the evaluation of the anomalies of the external, middle and inner ear in patients with congenital aural atresia and for planning the surgical treatment.

Relapsing polychondritis.

Relapsing polychondritis (RP) is a rare, inflammatory disease with multisystem involvement and it should be considered in the aetiology of sudden respiratory distress. A 49-year-old woman was admitted to the emergency service of Osmangazi Hospital in acute respiratory distress. She had a tracheostomy following a diagnosis of laryngeal stenosis 10 years earlier. She was managed thereafter at another hospital with a diagnosis of asthma. At admission she was in respiratory distress, had arthralgias, bilateral subconjunctival hyperaemia, periorbital oedema and skin lesions. A thoracic CT showed tracheal wall thickening. Calcification of the auricular regions were noted bilaterally. Bronchi, conjunctiva and skin lesions were biopsied with a provisional diagnosis of RP. The diagnosis of RP in this patient was based on clinical, pathological and radiological findings. Steroid therapy was begun and she was referred to a surgical centre for stenting. This case report emphasizes the need to consider the possibility of RP as a cause of sudden respiratory distress.

[Wegener granulomatosis: three cases]. / Uç olgu nedeniyle Wegener granülomatözü.

Wegener granulomatosis (WG) is characterized by granulomatous vasculitis that involves multisystem, including upper and lower airways and kidney. WG may be a mortal disease if the diagnosis is delayed. The aim of this study is to present three patients admitted with different prediagnosis but after the investigations were diagnosed as WG and followed in our clinic. The cases were discussed with the literature knowledge. All three patients were diagnosed as WG with clinical, radiological and pathological findings. c-ANCA was positive in two patients, and negative one. Complete remission was established with treatment in one case. The treatment of other patients going on, however, the third patient was lost to follow up.

High-resolution computed tomography findings are correlated with disease severity in asthma.

BACKGROUND: The structural changes in the airways of asthmatics are also referred to as remodeling and can be identified using high-resolution computerized tomography (HRCT). OBJECTIVES: To find out whether there are any abnormal HRCT features which can be attributed to asthma and their clinical correlates, and any differences of abnormal HRCT features between asthmatics and patients with chronic obstructive pulmonary disease (COPD). METHODS: We performed (HRCT) scans to assess airway remodeling in 160 nonsmoker asthmatics compared with 27 patients with COPD. RESULTS: Bronchial wall thickening, hyperlucency, centrilobular prominence, bronchiectasis, thick linear opacities and mucoid impaction were all correlated with disease severity in asthma. FEV(1) values were inversely correlated with bronchial wall thickening, hyperlucency, mucoid impaction, linear shadows, centrilobular prominence and bronchiectasis. In addition, thick linear opacities, mucoid impaction and bronchiectasis were more prominent in those patients with a long duration of asthma. Bronchial wall thickening, thick linear opacities, mucoid impaction, bronchiectasis and emphysema were more prominent in COPD patients compared with asthmatics. There was no difference with regard to age, mean values of FEV(1) and the duration of asthma between allergic and nonallergic asthmatics as well as abnormal HRCT findings. CONCLUSIONS: COPD patients have more prominent HRCT findings as compared with asthmatics. In the asthmatics, abnormal HRCT findings are more prominent with increased severity, decreased FEV(1) values and the duration of asthma. The remodelling of airways in allergic asthmatics did not differ from that in their nonallergic counterparts as determined by HRCT.

Computed tomography features in malignant pleural mesothelioma and other commonly seen pleural diseases.

OBJECTIVE: To investigate the computed tomography (CT) features of malignant pleural mesothelioma (MPM) cases, comparing them to those in other malignant and benign pleural diseases. MATERIALS AND METHODS: We reviewed the CT findings of 215 patients; 99 with MPM, 39 with metastatic pleural disease (MPD), and 77 with benign pleural disease. The findings were evaluated in univariate and multivariate analysis for differentiation of pleural diseases. RESULTS: In patients with MPM, the most common CT features were circumferential lung encasement by multiple nodules (28%); pleural thickening with irregular pleuropulmonary margins (26%); and pleural thickening with superimposed nodules (20%). In the majority (70%) of cases, there was rind-like extension of tumor on the pleural surfaces. In multivariate analysis, the CT findings of "rind-like pleural involvement", "mediastinal pleural involvement", and "pleural thickness more than 1 cm" were independent findings in differentiating MPM from MPD with the sensitivity/specificity values of 70/85, 85/67, and 59/82, respectively. "Rind-like pleural involvement", "mediastinal pleural involvement", "pleural nodularity" and "pleural thickness more than 1 cm" were independent findings for differentiation of malignant pleural diseases (MPM+MPD) from benign pleural disease with the sensitivity/specificity values of 54/95, 70/83, 38/96, and 47/64, respectively. Invasion of thoracic structures such as pericardium, chest wall, diaphragm, mediastinum, with pleural disease and nodular involvement of fissures, was detected infrequently; however, since these invasions were not seen in benign pleural diseases, it was concluded these invasions, if detected on a CT scan, directly suggested malignancy. CONCLUSION: A patient has extremely high probability of malignant pleural disease if one or more of these CT findings are found and the possibility of MPM is high. These findings may be important for patients in bad state or patients who do not want any invasive biopsy procedures. It is also possible to identify cases with a low probability of malignant disease.