Correlation between Radiological Characteristics, PET-CT and Histological Subtypes of Primary Lung Adenocarcinoma-A 102 Case Series Analysis.

Background and Objectives: Lung cancer is the second most common form of cancer in the world for both men and women as well as the most common cause of cancer-related deaths worldwide. The aim of this study is to summarize the radiological characteristics between primary lung adenocarcinoma subtypes and to correlate them with FDG uptake on PET-CT. Materials and Methods: This retrospective study included 102 patients with pathohistologically confirmed lung adenocarcinoma. A PET-CT examination was performed on some of the patients and the values of SUVmax were also correlated with the histological and morphological characteristics of the masses in the lungs. Results: The results of this analysis showed that the mean size of AIS-MIA (adenocarcinoma in situ and minimally invasive adenocarcinoma) cancer was significantly lower than for all other cancer types, while the mean size of the acinar cancer was smaller than in the solid type of cancer. Metastases were significantly more frequent in solid adenocarcinoma than in acinar, lepidic, and AIS-MIA cancer subtypes. The maximum standardized FDG uptake was significantly lower in AIS-MIA than in all other cancer types and in the acinar predominant subtype compared to solid cancer. Papillary predominant adenocarcinoma had higher odds of developing contralateral lymph node involvement compared to other types. Solid adenocarcinoma was associated with higher odds of having metastases and with higher SUVmax. AIS-MIA was associated with lower odds of one unit increase in tumor size and ipsilateral lymph node involvement. Conclusions: The correlation between histopathological and radiological findings is crucial for accurate diagnosis and staging. By integrating both sets of data, clinicians can enhance diagnostic accuracy and determine the optimal treatment plan.

Chronic Obstructive Pulmonary Disease Mismatch: A Case of Tracheal Hamartoma.

OBJECTIVE: To demonstrate the diagnostic challenge of tracheal hamartoma in a patient with chronic obstructive pulmonary disease (COPD). CLINICAL PRESENTATION AND INTERVENTION: A 65-year-old man with COPD was admitted with sudden onset of asphyxia attacks related to the position of his body. Computerized tomography (CT) of the neck showed a soft tissue mass with calcification, which occluded more than two-thirds of the proximal part of the trachea. The tumor was completely removed, and histopathology confirmed hamartoma. CONCLUSION: This case report showed the detection of a primary tracheal tumor on CT. This finding enabled the correct diagnosis and led to appropriate treatment in the form of surgery.

Sclerosing Mesenteritis Presenting as a Pseudotumor of the Greater Omentum.

OBJECTIVE: The aim was to demonstrate a diagnostic challenge of sclerosing mesenteritis initially considered as liposarcoma. CLINICAL PRESENTATION AND INTERVENTION: A 45-year-old man was admitted with a painful abdominal mass. Abdominal computed tomography demonstrated a well- demarcated tumor in his left hemiabdomen, with a large fat component and areas of soft tissue attenuation suggestive of liposarcoma. Intraoperative findings showed a tumor arising from the greater omentum. The tumor was completely removed, and histopathology confirmed a pseudotumorous type of sclerosing mesenteritis with dominant mesenteric lipodystrophy. CONCLUSION: This case showed that a pseudotumorous type of sclerosing mesenteritis should be considered in the differential diagnosis of the mesenteric tumors.

Wegener's granulomatosis: clinico-radiological finding at initial presentation.

Diagnosis of Wegener's granulomatosis at the early stage is difficult because of the nonspecific symptoms which mimic other disorders. The aim of this paper is to describe clinical and radiological features of Wegener's granulomatosis (WG) in a Serbian population at initial presentation. A retrospective review of 37 patient's case records was carried out. All those patients were diagnosed with WG and they attended the Institute for lung diseases in Belgrade over the period of 15 years. There were 20 males and 17 females, ranging in age from 18 to 73 years (mean age 46.2 years). The mean period from the onset of the first symptoms to diagnosis of WG was 4.59 +/- 6.15 months. The criteria of American College of Rheumatology were fulfilled in all patients. Twenty-five of 37 patients had systemic, generalized form of WG and while 12 of them had a limited involvement of upper and lower respiratory system. The frequency of different system involvement was: upper respiratory tract 64.8%, lower respiratory tract 100%, kidneys 67.5%, musculoskeletal system 40.5%, skin 27.2%, eyes 8.1%, and nervous system two patients. ANCA (antineutrophil cytoplasmic antibodies) test was positive in 32 ((86.5%) patients, and negative in 5 (13.5%). All patients were ANA negative. Histological evidence of granulomatous vasculitis was obtained in 34 (91.9%), whereas in three patients the diagnosis was based on clinical manifestations and positive c-ANCA test. There are minor variations in our data when compared with those reported in literature.

Detection of impaired renal allograft function in paediatric and young adult patients using arterial spin labelling MRI (ASL-MRI).

The study aimed to discriminate renal allografts with impaired function by measuring cortical renal blood flow (cRBF) using magnetic resonance imaging arterial spin labelling (ASL-MRI) in paediatric and young adult patients. We included 18 subjects and performed ASL-MRI on 1.5 T MRI to calculate cRBF on parameter maps. cRBF was correlated to calculated glomerular filtration rate (GFR) and compared between patient groups with good (GFR ≥ 60 mL/min/1.73 m2) and impaired allograft function (GFR < 60 mL/min/1.73 m2). Mean cRBF in patients with good allograft function was significantly higher than in patients with impaired allograft function (219.89 ± 57.24 mL/min/100 g vs. 146.22 ± 41.84 mL/min/100 g, p < 0.008), showing a highly significant correlation with GFR in all subjects (r = 0.75, p < 0.0001). Also, the diffusion-weighted imaging (DWI-MRI) apparent diffusion coefficient (ADC) and Doppler measurements of peak-systolic and end-diastolic velocities and the resistive index (PS, ED, RI) were performed and both methods showed no significant difference between groups. ADC implied no correlation with GFR (r = 0.198, p = 0.464), while PS indicated moderate correlation to GFR (r = 0.48, p < 0.05), and PS and ED moderate correlation to cRBF (r = 0.58, p < 0.05, r = 0.56, p < 0.05, respectively). Cortical perfusion as non-invasively measured by ASL-MRI differs between patients with good and impaired allograft function and correlates significantly with its function.

Solitary fibrous pleural tumor associated with loss of consciousness due to hypoglycemia.

The patient suffered loss of consciousness, dysarthria and right sided hemiparesis. The CT scan and MRI scans were negative. These findings are more in keeping with a diagnosis of Transient Ischemic Attack (TIA) or mild CVA. Hypoglycemia per se does not usually cause hemiparesis. The blood glucose level was low but I am not sure if one can conclude that hypoglycemia caused the above noted neurological signs and symptoms. The authors do not present any data to prove that this patient had "hypoglycemic coma".

Sonographic Indicators for Treatment Choice and Follow-Up in Patients with Pleural Effusion.

Aim: The aim of this study was to evaluate the role of thoracic sonography in treatment of pleural effusions and to identify sonographic indicators for surgical intervention. Materials and Methods: This study included 378 patients with pleural effusions. US characteristics of effusions as the echo structure and pleural thickening were analyzed. Regarding the US finding, the diagnostic or therapeutic procedure was performed. Results: The study included 267 male and 111 female patients, an average of 56.7 years. Infection was the most frequent cause of effusion. Two hundred sixty-nine patients had loculated and 109 free pleural effusion. Most frequent echo structure of loculated effusion was complex septate, whereas free effusion was mostly anechoic. Successful obtaining of the pleural fluid without real-time guidance was in 88% and under real-time guidance in 99% patients (p < 0.012). There was no significant difference in success rate between free and loculated effusion and regarding the echo structure (p=0.710 and 0.126, respectively). Complete fluid removal after serial thoracentesis or drainage was achieved in 86% patients. Forty-five patients with significantly thicker pleural peel and impairment of the diaphragmatic function than remaining of the group (p < 0.001) underwent surgery. Open thoracotomy and decortication was more frequently performed in patients with completely fixed diaphragm and complex, dominantly septated effusions. There is no significant difference in US parameters comparing to patients underwent VATS, but the number of VATS is too small for valid conclusion. Conclusion: Thoracic sonography is a very useful tool in the evaluation of clinical course and treatment options in patients with pleural effusions of a different origin.

Mucous gland adenoma simulating bronchial asthma: case report and literature review.

We report a case of mucous gland adenoma arising in the left main bronchus which was initially misdiagnosed as asthma and review the previous reported cases of this rare tumor published in the available literature.

Acute "Pseudoischemic" ECG Abnormalities after Right Pneumonectomy.

New onset of electrocardiographic (ECG) abnormalities can occur after lung surgery due to the changes in the position of structures and organs in the chest cavity. The most common heart rhythm disorder is atrial fibrillation. So-called "pseudoischemic" ECG changes that mimic classic ECG signs of acute myocardial ischemia are also often noticed. We report the case of a 68-year-old male, with no prior cardiovascular disease, who underwent extensive surgical resection for lung cancer. On a second postoperative day, clinical and electrocardiographic signs of acute myocardial ischemia occurred. According to clinical course, diagnostic procedures, and therapeutic response, we excluded acute coronary syndrome. We concluded that physical lesion of the pericardium, caused by extended pneumonectomy with resection of the pericardium, provoked the symptoms and ECG signs that mimic acute coronary syndrome. Our final diagnosis was postpericardiotomy syndrome after extended pneumonectomy and further treatment with nonsteroidal anti-inflammatory drugs (NSAIDs) was recommended. It is necessary to consider possibility that nature of ECG changes after extended pneumonectomy could be "pseudoischemic."

Durable complete remission of poor performance status metastatic lung adenocarcinoma patient treated with second-line erlotinib: a case report.

This paper presents a rare case of an elderly patient treated with erlotinib for disseminated lung adenocarcinoma with poor performance status (Eastern Cooperative Oncology Group performance status [PS]3). This treatment led to a long duration of complete remission according to Response Evaluation Criteria in Solid Tumors 1.1 - almost 7 years (81 months) of progression-free survival (PFS) and overall survival (OS) of 10 years by March 2017. The treatment with erlotinib started in September 2008 and it was well tolerated with no adverse effects. Mutation analyses (real-time polymerase chain reaction method) revealed deletion of EGFR (epidermal growth factor receptor) gene and wild-type Kirsten-ras protein gene in exon 19. In May 2015, the patient relapsed with jaundice and enlarged lymph nodes of the liver hilum, with no other metastasis, PS 2. Biopsy confirmed metastasis of lung adenocarcinoma. EGFR molecular testing did not reveal T790M mutation. Treatment was continued with gemcitabine-cisplatin chemotherapy. A total of six cycles were administered with nearly complete response and Eastern Cooperative Oncology Group performance status 0. Further on, gemcitabine monotherapy has been administered with nearly complete response maintained and OS of 10 years by March 2017. This report describes an extremely rare case of a poor performance patient with advanced metastatic adenocarcinoma harboring EGFR mutation - deletion in exon 19 - who was receiving salvage erlotinib and had a complete response with 81 months of PFS followed by a relapse and subsequent chemotherapy which led to nearly complete response, with an OS of 10 years by March 2017. Such a complete response to tyrosine kinase inhibitor therapy in a poor PS patient, with long PFS and OS achieved, justifies tyrosine kinase inhibitor treatment approach in poor PS patients with EGFR-sensitizing tumors, and furthermore points to the feasibility of administering chemotherapy at the time of relapse.

Tracheobronchial tumors.

Tumors of trachea and bronchi are uncommon and can occur in the form of benign or low- and high-grade malignant tumors. Although tracheobronchial tumors (TBTs) represent only 0.6% of all pulmonary tumors, they are clinically significant. Delays in diagnosis of these tumors commonly occur because the signs and symptoms caused by these tumors are nonspecific and chest radiographs are often considered unremarkable. Therefore, novel radiological techniques and better access to flexible bronchoscopy enable detection of larger number of TBT. The purpose of this article is to provide a review of tracheal and bronchial tumors and discuss significant aspects of the different TBT with focus on clinical manifestations and diagnostic procedures.

Bullous lung diseases as a risk factor for lung cancer: A case report.

Introduction: A possible association between lung cancer and bullous lung disease has been suggested and recently supported by the results of genetic studies. Case report: A previously healthy 43-year-old man, smoker, was diagnosed with bullous lung disease at the age of 31 years. He was followed up for 12 years when lung cancer (adenocarcinoma) was found at the site. In the meantime, he was treated for recurrent respiratory infections. Conclusion: There is the need for active approach in following up the patients with pulmonary bulla for potential development of lung cancer.

Pulmonary and Vertebral Mycobacterium avium Disease in a HIV-negative 71-year-old Man - A Case Report.

Nontuberculous mycobacteria (NTM) caused pulmonary disease is on increase worldwide, especially in countries with decreasing time trend of tuberculosis incidence. NTM skeletal affection is rare. Mycobacterium avium related disease, with still unclear clinical and radiologic features, is in current focus of both clinicians and researchers. An exhausted severely ill 71-year-old man was admitted on emergency due to cough, dyspnea and lumbar back pain to be diagnosed with terminal phase M. avium disease. Three sputum smears were positive for acid fast bacilli and M. avium was identified with hybridization reaction by means of GenoType ® MTBC (Hain). Apart from pulmonary disease, compressive fractures of the 12th thoracic and 1-4th lumbar vertebrae were detected. We found age, chronic alcoholism, previous professional exposure, tobacco smoking, chronic obstructive pulmonary disease and previous tuberculosis as risk factors for NTM disease in the HIV-negative patient. Despite combined antibiotic treatment, disease had lethal outcome. This case report might contribute to clinicians' awareness and improved knowledge on this sort of pathology, and lead to earlier diagnosis with possibly better disease outcome.

Coexistence of Autoantibodies against the Golgi Complex and Ro52 Antigen in a Patient with Nonspecific Interstitial Pneumonia.

Nonspecific interstitial pneumonia (NSIP) is often associated with connective tissue diseases (CTD). The diagnosis of NSIP was confirmed in a 63-year-old man by high-resolution computed tomography and an open lung biopsy. Anti-Golgi complex autoantibodies (AGA) and anti-Ro52 antibodies were simultaneously detected at high concentrations. Autoantibodies to aminoacyl-tRNA synthetases (ARS) were negative. The patient was treated with corticosteroids for six months. During the seven-year follow-up, NSIP had a slow progression and patient had not developed the clinical features of CTD. The present study potentially demonstrates that the autoimmune process elicited by AGA and/or Ro/SSA may play a role in promoting idiopathic NSIP independently of the typical ARS routes, which has not been reported thus far.

Synchronous advanced pulmonary tuberculosis and acute virus myocarditis mimicked Wegener granulomatosis in a 26-year-old man ­ A case report.

Introduction: Tuberculosis patients are rarely asymptomatic. Acute virus myocarditis presents with a wide range of symptoms, from mild dyspnea or chest pain to cardiogenic shock and death. Case Outline: A 26-year-old Caucasian man non-smoker presented with one-week history of lower extremities' swelling. The patient's medical history also revealed a two-day episode of subfebrile temperature with scanty hemoptysis three weeks prior to admission. The episode had not provoked him to seek medical care. Physical examination revealed generalized oedema, and laboratory analysis showed signs of acute renal insufficiency. Enlarged heart and hilar shadows, bilateral massive cavitary pulmonary opacities and pleural effusion were found at chest radiography. Sputum smears were Mycobacteria negative on direct microscopy. Electrocardiogram changes and echocardiography were suggestive of acute myocarditis with dilated cardiomyopathy. IgM titer to adenovirus was positive. Under diuretics, angiotensin-converting-enzyme inhibitor, beta-blocker, antibiotics and bed rest, fast heart compensation and renal function repair were achieved. Radiographic pulmonary changes promptly regressed except for a cavity in the right upper lobe. Bronchial aspirate from the affected lobe was Mycobacteria positive on direct microscopy and culture positive for Mycobacterium tuberculosis. Standard anti-tuberculosis drug regimen led to recovery. Conclusion: In the unusual common existence of two diseases whose presentation initially mimicked Wegener's granulomatosis, acute dilated cardiomyopathy contributed to pulmonary tuberculosis detection. To prevent diagnostic delay in tuberculosis, further efforts in population education are necessary together with continual medical education

[Amiodarone pulmonary toxicity: case report].

INTRODUCTION: Amiodarone, an antiarrhythmic drug, which contains iodine compound, has a tendency to accumulate in some organs including the lungs.This is age, drug dosage and therapy duration dependent. CASE OUTLINE: We present a case of a 73-year-old man, a smoker, who was admitted as emergency case due to severe dyspnea, tachypnea with signs of cyanosis and respiratory insufficiency. Chest x-ray revealed bilateral diffuse pulmonary shadows in the middle and upper parts of the lungs, similar to those in tuberculosis. His illness history showed chronic obstructive pulmonary disease, arterial hypertension, and atrial fibrillation which has been treated with amiodarone for six years. Sputum smears were negative for mycobacteria, and by the diagnostic elimination method for specific, non-specific and malignant disease the diagnosis of amiodarone pulmonary toxicity was made. Fiberoptic bronchoscopy and pathohistological findings of bronchiolitis obliterans organizing pneumonia confirmed the diagnosis. As the first therapeutic approach, amiodarone therapy was stopped.Then, systemic therapy with methylprednisolone 21 (sodium succinate) 40 mg i.v. daily during the first two weeks was initiated and continued with daily dose of methylprednisolone 30 mg orally during the next three months. The patient showed a marked subjective improvement during the first week, which was followed by the improvement of respiratory function and withdrawal of pulmonary changes with complete radiographic and CT resolution after eight months. CONCLUSION: Amiodarone pulmonary toxicity should be taken into consideration, especially in elderly patients with respiratory symptoms and pulmonary changes, even if only a low dose of amiodarone is administred over a longer time period.

Drug induced lung disease--amiodarone in focus.

More than 380 medications are known to cause pulmonary toxicity. Selected drugs that are important causes of pulmonary toxicity fall into the following classes: cytotoxic, cardiovascular, anti-inflammatory, antimicrobial, illicit drugs, miscellaneous. The adverse reactions can involve the pulmonary parenchyma, pleura, the airways, pulmonary vascular system, and mediastinum. Drug-induced lung diseases have no pathognomonic clinical, laboratory, physical, radiographic or histological findings. A drug-induced lung disease is usually considered a diagnosis of exclusion of other diseases. The diagnosis of drug-mediated pulmonary toxicity is usually made based on clinical findings. In general, laboratory analyses do not help in establishing the diagnosis. High-resolution computed tomography scanning is more sensitive than chest radiography for defining radiographic abnormalities. The treatment of drug-induced lung disease consists of immediate discontinuation of the offending drug and appropriate management of the pulmonary symptoms. Glucocorticoids have been associated with rapid improvement in gas exchange and reversal of radiographic abnormalities. Before starting any medication, patients should be educated about the potential adverse effects of the drug. Amiodarone is an antiarrhythmic agent used in the treatment of many types of tachyarrhythmia. Amiodarone-caused pulmonary toxicity is a well-known side effect (complication) of this medication. The incidence of amiodarone-induced lung disease is approximately 5-7%.

Sarcoidosis of the pleura--A case report.

INTRODUCTION: Pleural involvement is an uncommon manifestation of sarcoidosis. It may manifest as pleural effusion, pneumothorax, pleural thickening and nodules, hydropneumothorax, trapped lung, hemothorax, or chylothorax. The incidence of pleural effusion with sarcoidosis ranges from 0% to 5% but has been reported to be as high as 7.5%. Pleural effusions complicate sarcoidosis in < 3% of patients. CASE REPORT: We reported a 64-year-old male patient with chronic multiorgan sarcoidosis. This patient developed pleural sarcoidosis with massive pleural effusion several years after the diagnosis of sarcoidosis. A definitive diagnosis of a sarcoid pleural effusion was based on a biopsy demonstrating noncaseating granuloma. The patient responded well to the treatment (methotrexate and methylprednisolone) with a complete withdrawal of pleural effusion following five weeks of the treatment beginning. CONCLUSION: The presented patient is a rare case of pleural involvement of sarcoidosis with massive effusion, who responded well to the treatment.

Somatostatin-producing duodenal carcinoma: clinicopathological description of a case.

Somatostatinomas are rare functioning neoplasms usually arising in the pancreas and duodenum. They are seldom associated with typical clinical symptoms. Their diagnosis is confirmed only by histological and immunohistochemical studies and the presence of specific hormones. Two distinct clinicopathological forms of somatostatinoma exist: duodenal and pancreatic somatostatinomas. Clinically, compared to pancreatic somatostatinomas, duodenal somatostatinomas are more often associated with nonspecific symptoms and neurofibromatosis, but less often with somatostatinoma syndrome or metastasis. We report a case of somatostatin-producing duodenal carcinoma in a 45-year-old female with neither neurofibromatosis nor somatostatinoma syndrome. Abdominal computed tomography showed a 18 mm mass in the duodenum which had given rise to multiple lymph node metastases. Although the endoscopic biopsies were free of malignancy, the patient subsequently underwent Whipple's operation for the duodenal mass. Immunohistochemical analysis confirmed the diagnosis of somatostatin-producing carcinoma.

Diaphragm motion and lung function prediction in patients operated for lung cancer--a pilot study on 27 patients.

BACKGROUND: The influence of the diaphragm motion to the accuracy of postoperative lung function prediction after the lung resction is still debatable. METHODS: Prospective study that included 27 patients who underwent a lung resection for cancer. Diaphragm movements were assessed radiographically and by ultrasonography before the operation and postoperatively, with the lung fully expanded. The relationship between the diaphragm movements and differences between ppo FEV1 and measured postoperative FEV1, was analysed by expressing diaphragm movements as preoperative diaphragm amplitudes, preoperative-postoperative amplitude differences or in relation to fixed intrathoracic distances. RESULTS: The mean difference between preoperative and postoperative diaphragm amplitudes of the diseased side was 2.42 ± 1.25 cm and 2.11 ± 2.04 cm when measured radiographically and by ultra sound respectively (p > 0.05). A significant positive correlation was found for the entire group only between the patients' height and the differences ppo FEV1 - actual FEV1: the prediction was more unprecise in taller patients. With the cut-off value of 550 ml for differences between ppo FEV1 and actual FEV1, a significant inverse correlation was found only if the preoperative ipsilateral diaphragm amplitude was presented as a percentage of the preoperative apex-base distance in inspiration. For right-sided tumours, the greater the difference between preoperative and postoperative ipsilateral diaphragm amplitudes, the greater discrepancy between predicted and actual postoperative FEV1. For left-sided tumours, inverse correlation existed if the preoperative diaphragm amplitude was presented as a percentage of the preoperative distance apex-base. CONCLUSION: Diaphragm movements influence the accuracy of the postoperative lung function prediction.