Image-guided Percutaneous Aspiration Research Articles

Image Guided Transthoracic Fine Needle Aspiration Cytology of Mediastinal Masses- An Experience from a Tertiary Care Hospital of Eastern India

Introduction: Image-guided percutaneous transthoracic needle biopsy of mediastinal masses is usually safe and effective technique for obtaining tissue for diagnosis and early decision can be taken for effective management. Aim: The purpose of this study was to know the efficacy of different investigative methods for diagnosis of mediastinal masses and to analyse various cytomorphological forms. Materials and Methods: This was a retrospective observational study conducted at Pandit Raghunath Murmu Medical College, Baripada from January 2019 to June 2020. Retrospective review of all Ultrasonography (USG) and Computed Tomography (CT)- guided percutaneous aspirations of the anterior mediastinum mass. Relevant data regarding patient demographics, imaging characteristics of aspirated masses, presence of complications, and subsequent surgical intervention were collected. Cytology and core biopsy pathology results were recorded. The qualitative data were compared using Chi-square test with Yate’s correction. Results: This study included 35 patients (25 male, 10 female). Highest incidence was noticed in anterior mediastinum (n=26, 74.3%) followed by superior (n=4, 11.4%) and posterior mediastinum (n=3, 8.6%). Most of the cases were malignant (n=28; 80%) and Non Hodgkin Lymphoma (NHL) was most common diagnosis (n=10; 28.6%). Radiology yielded the correct diagnosis in 25 out of 35 patients (71.4%). Core biopsy was obtained in six cases and all the cases were diagnosed cytologically with 100% accuracy. There was statistically significant difference between the radiological and cytological diagnosis. The complication rate was minimal (2/35), both were the case of pneumothorax. Conclusion: Image-guided percutaneous aspiration is a safe diagnostic procedure with high diagnostic accuracy in aspiration cytology than radiology. Highest diagnostic accuracy was seen in non hodgkins lymphoma and it can potentially obviate more invasive procedures.

Clinical Characteristics and Treatment Outcomes in Human Immunodeficiency Virus (HIV)-Infected Patients with Liver Abscess: A Retrospective Study of 53 Patients.

BackgroundAlthough episodes of liver abscess (LA) have been reported in patients infected with the human immunodeficiency virus (HIV), specific symptoms in these patients remain unclear.Material/MethodsThe clinical characteristics, laboratory findings, treatments, and final clinical outcomes of LA in 53 HIV-infected patients were analyzed.ResultsThe most common clinical manifestations were fever (92.5%), chills (41.5%), and abdominal pain (37.7%). The mean CD4+ T cell count in these HIV-infected patients at admission was 328.09±236.192 cells/μL. LA and blood cultures were positive in six (17.6%) and two (5.4%) patients, respectively. Thirteen strains of pathogens, including Staphylococcus, Corynebacterium, and Candida, were detected in LA cultures. Forty-four (95.7%) of 46 patients were successfully treated with antibiotics plus image-guided percutaneous aspiration, drainage, or surgery, whereas four (57.1%) of the remaining seven patients were successfully treated with antibiotics alone. Septic shock [odds ratio (OR)=8.970; 95% confidence interval (CI)=0.840–92.110; p=0.014] and ascites (OR=7.057; 95% CI=0.683–72.957; p=0.016) were found to be independent risk factors for poor prognosis. The clinical characteristics of LA in HIV-infected patients were nonspecific, with bacteria being the primary pathogens.ConclusionsAntibiotics plus image-guided percutaneous drainage can effectively improve treatment outcomes in HIV-infected patients with LA.

Novel Quality Indicators for Radiologists Interpreting Abdominopelvic CT Images: Risk-Adjusted Outcomes Among Emergency Department Patients With Right Lower Quadrant Pain.

The purpose of this study was to determine whether individual radiologists are predictive of important relevant health outcomes among emergency department (ED) patients undergoing abdominopelvic CT for right lower quadrant pain. This single-institution retrospective cohort study included 2169 patients undergoing abdominopelvic CT for right lower quadrant pain in the ED from February 1, 2012, through August 31, 2016. CT examinations were interpreted by 15 radiologists (four emergency, 11 abdominal) who each reported on more than 70 CT examinations in the cohort. After risk adjustment for covariates thought to influence outcome, including baseline risk (demographics, 30 Elixhauser comorbidities, number of previous ED visits), clinical factors (vital signs, triage and pain scores, laboratory data), and system factors (time of CT, resident involvement, attending physician experience), multivariable models were built to analyze the effect of individual radiologists on four important health outcomes: hospital admission (primary outcome), readmission within 30 days, abdominal surgery, and image-guided percutaneous aspiration or drainage. Radiologists had a mean experience of 14 years (range, 2-36 years) and read a mean of 145 CT examinations in the study cohort (range, 73-253 examinations). Unadjusted event rates across the 15 radiologists were 38-55% (admission), 11-21% (readmission), 10-26% (surgery), and 0-3% (aspiration or drainage). After risk adjustment, individual radiologists were not a significant multivariable predictor of hospital admission, readmission within 30 days, abdominal surgery, or image-guided abdominal percutaneous aspiration or drainage (all p > 0.05). Individual radiologists were indistinguishable both within group and between group by emergency and abdominal specialization for the prediction of major patient outcomes after abdominopelvic CT performed for right lower quadrant pain in the ED.

Endobronchial ultrasound-guided transbronchial needle aspiration of thyroid: Report of two cases and systematic review of literature.

Endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) is a minimally invasive and safe technique for a sampling of mediastinal lesions. Indications for EBUS-TBNA have gradually expanded since its introduction. The usual approach to cytological sampling of the thyroid gland is percutaneous ultrasound-guided fine needle aspiration (US-FNA) performed under local anesthesia. US-FNA may be risky or not feasible in intrathoracic/substernal thyroid location. Feasibility of aspirating thyroid lesions with EBUS-TBNA has been occasionally reported. We report two patients wherein EBUS-TBNA was utilized for thyroid lesion aspiration and definitive diagnosis. We highlight the utility and safety of EBUS-TBNA in the evaluation of intrathoracic thyroid lesions wherein image-guided percutaneous aspiration may be risky/sometimes impossible to perform. A systematic review of literature has also been performed summarizing and discussing the issues pertaining to EBUS-TBNA of the thyroid gland.

Image-Guided Percutaneous Aspiration and Gelfoam Treatment of Petrous Apex Cholesterol Granuloma: A New Theory and Method for Diagnosis and Treatment

Although diagnosis of cholesterol granulomas of the skull base can be straightforward with computed tomography (CT) and magnetic resonance imaging (MRI) appearance, treatment is controversial with various skull base approaches described in the literature. This report describes a 35-year-old man who presented with a symptomatic, enlarging cystic lesion in the left petrous apex and clivus that had imaging features of a cholesterol granuloma (cholesterol cyst). Due to a prior history of treated mediastinal germ cell tumor, pathologic confirmation of the lesion was requested. A CT-guided percutaneous aspiration revealed dark used motor oil-like fluid. Continued aspiration yielded a change in the character of the fluid to marrow red. Injection of contrast revealed no communication with cerebrospinal fluid. Gelfoam (Pfizer, New York, New York, USA) was subsequently injected percutaneously into the residual cavity. Histopathology showed no evidence of malignancy and follow-up MRI at 1 month, 3 months, 6 months, and 1 year demonstrated continued decrease in size and signal of the lesion.

Image guided percutaneous splenic interventions

Aim The objective of this study is to evaluate the efficacy and safety of image-guided percutaneous splenic interventions as diagnostic or therapeutic procedures. Materials and methods We performed a retrospective review of our interventional records from July 2001 to June 2006. Ninety-five image-guided percutaneous splenic interventions were performed after informed consent in 89 patients: 64 men and 25 women who ranged in age from 5 months to 71 years (mean, 38.4 years) under ultrasound ( n = 93) or CT ( n = 2) guidance. The procedures performed were fine needle aspiration biopsy of focal splenic lesions ( n = 78) and aspiration ( n = 10) or percutaneous catheter drainage of a splenic abscess ( n = 7). Results Splenic fine needle aspiration biopsy was successful in 62 (83.78%) of 74 patients with benign lesions diagnosed in 43 (58.1%) and malignancy in 19 (25.67%) patients. The most common pathologies included tuberculosis (26 patients, 35.13%) and lymphoma (14 patients, 18.91%). Therapeutic aspiration or pigtail catheter drainage was successful in all (100%) patients. There were no major complications. Conclusions Image-guided splenic fine needle aspiration biopsy is a safe and accurate technique that can provide a definitive diagnosis in most patients with focal lesions in the spleen. This study also suggests that image-guided percutaneous aspiration or catheter drainage of splenic abscesses is a safe and effective alternative to surgery.

Advances in abdominal interventional radiology

Advances in abdominal interventional radiology

Pyogenic liver abscess. An audit of experience over the past decade.

To audit our experience in managing patients with pyogenic liver abscesses since 1984 and to identify any risk factor associated with hospital mortality. Retrospective review. A tertiary referral center. Eighty-three patients with pyogenic liver abscesses were studied to determine demographic characteristics; clinical features, laboratory, imaging, and microbiologic findings; methods of treatment; and final outcome. The median follow-up period was 9.8 months. All patients were treated with intravenous antibiotic drugs. Fifty-three patients were to image-guided percutaneous aspiration of the abscess. A percutaneous drainage catheter was inserted after aspiration in 27 patients. Laparotomy was performed in 27 patients; seven of them underwent an elective operation. Hospital mortality, defined as death within the same hospital admission for management of liver abscess. Biliary tract disease was the most frequently identifiable cause. The right lobe abscess was more frequently cryptogenic, while the left lobe abscess was more frequently related to intrahepatic stones (P < .001). The overall hospital mortality rate was 18% (15/83). On univariate analysis, female gender, rupture on presentation, emergency laparotomy, management without aspiration or catheter drainage, presence of malignancy, hyperglycemia, hyperbilirubinemia, elevated prothrombin time, and elevated activated partial thromboplastin time were significantly associated with hospital mortality. On multivariate logistic regression analysis, presence of malignancy, hyperbilirubinemia, and elevated activated partial thromboplastin time were found to be independent risk factors. Pyogenic liver abscess is still a disease with significant mortality. Early diagnosis and prompt treatment are necessary to further improve our results of management.