Search results for "DIFFERENTIAL DIAGNOSIS"
showing 10 items of 404 documents
Primitive Neuroectodermal Tumor (PNET) of the kidney: a case report.
2004
Abstract Background A case of Primitive Neuroectodermal Tumor (PNET) of the kidney in a 27-year-old woman is presented. Few cases are reported in the literature with a variable, nonspecific presentation and an aggressive behaviour. In our case, a radical nephrectomy with lymphadenectomy was performed and there was no residual or recurrent tumour at 24-month follow-up. Methods The surgical specimens were formalin-fixed and paraffin embedded. The sections were stained with routinary H&E. Immunohistochemistry was performed. Results The immunohistochemical evaluation revealed a diffuse CD99 positivity in the cytoplasm of the neoplastic cells. Pankeratin, cytokeratin AE1/AE3, vimentin, desmin, S…
Unexpected death for Takayasu aortitis associated with coronary ostial stenosis: case report.
2015
The differential diagnosis of vasculitis is often a difficult task due to the frequent morphological similarities that various vasculitic syndromes express when the heart is the target organ. The more the lesions are limited to the arterial tree with absent or almost silent coronary events, the less specific the anatomical and clinical frameworks. To create a series of clinical records and on the basis of these assumptions, the authors report a case concerning the sudden death of a 43-year-old woman which occurred while an ergonometric test was being carried out 28 days after the onset of the symptoms. A subsequent postmortem investigation/autopsy enabled us to detect a granulomatous aortit…
Balance of T1-weighted images before and after application of a paramagnetic substance (Gd-DTPA)
1987
Ten patients with encephalitis disseminata and 10 patients with cerebral ischemia underwent computed tomography and magnetic resonance imaging examinations. The results before and after the application of contrast media were compared. It is shown that T1-weighted MRI images, even after application of gadolinium-DTPA, are of little value for differential diagnosis of these diseases. In contrast, T2-weighted images did support the diagnosis of an acute stage of encephalitis disseminata versus acute ischemia. This was also true for lesions that had not been adequately depicted by computed tomography.
Focal nodular hyperplasia: typical and atypical MRI findings with emphasis on the use of contrast media
2007
Focal nodular hyperplasia is a benign hypervascular hepatic tumour, frequently detected in asymptomatic patients undergoing imaging studies for unrelated reasons. Magnetic resonance imaging (MRI) generally allows a confident differential diagnosis with other hypervascular liver lesions, either benign or malignant. In addition, due to the recent development of hepatospecific MRI contrast agents, MRI concomitantly enables functional and morphological information to be obtained, thus providing important clues for the detection and characterization of focal nodular hyperplasia lesions.
Focal lesions in cirrhosis: Not always HCC.
2017
Even though most hepatocellular carcinomas (HCC) develop in the setting of cirrhosis, numerous other focal liver lesions and pseudolesions may be encountered. The role of the radiologist is therefore to differentiate these lesions from HCC to avoid under- and overdiagnosis. There are several ways of classifying these lesions: those which predate the development of fibrosis and cirrhosis (cystic lesions, hemangioma), those related to or a consequence of cirrhosis (regenerative nodules, dysplastic nodules, focal fibrosis, peribiliary cysts, shunts, or even cholangiocarcinoma), and those related to the underlying cause of chronic liver disease (lymphoma). Finally, some may develop independentl…
Clinicopathological study of oral focal mucinosis : a retrospective case series
2018
Background Oral focal mucinosis (OFM) is a rare soft tissue lesion of unknown etiology that exhibits tumor-like growth. It is considered the oral counterpart of cutaneous focal mucinosis or cutaneous myxoid cyst. This is a retrospective study of oral OFM diagnosed over a period of 42 years at an oral pathology service. Material and Methods Clinical, histopathological and immunohistochemical data were analyzed. Alcian blue staining and S-100 immunohistochemistry were performed. Results Eleven cases were retrieved (4:1 female-to-male ratio). The mean age was 44 years. The gingiva was the most affected site. The main clinical presentation was sessile or pedunculated lesions of fibrous or hyper…
D2-40 negative pyogenic granuloma-like Kaposi's sarcoma: Diagnostic features and histogenetic hypothesis of an uncommon skin tumor in HIV-negative pa…
2015
Locate full-text(opens in a new window)|View at Publisher| Export | Download | Add to List | More... Pathology Research and Practice Volume 211, Issue 7, July 01, 2015, Pages 528-532 D2-40 negative pyogenic granuloma-like Kaposi's sarcoma: Diagnostic features and histogenetic hypothesis of an uncommon skin tumor in HIV-negative patients (Article) Cabibi, D.a, Giannone, A.G.a , Guarnotta, C.a, Schillaci, O.b, Franco, V.a a Department of Sciences for Promotion of Health and Mother and Child Care, University of Palermo, Palermo, Italy b Servizio di Anatomia Patologica, Dipartimento Oncologico di III livello, La Maddalena Casa di Cura di Alta Specialità, Palermo, Italy View references (20) Abst…
Procalcitonin levels in candidemia versus bacteremia: a systematic review
2019
Background Procalcitonin (PCT) is a biomarker used to assess systemic inflammation, infection, and sepsis and to optimize antimicrobial therapies. Its role in the in the differential diagnosis between candidemia and bacteremia is unclear. The aim of this systematic review was to summarize the current evidence about PCT values for differentiating candidemia from bacteremia. Methods PubMed and EMBASE were searched for studies reporting data on the diagnostic performance of serum PCT levels in intensive care unit (ICU) or non-ICU adult patients with candidemia, in comparison to patients with bacteremia. Results We included 16 studies for a total of 45.079 patients and 785 cases of candidemia. …
Diagnosing and staging of pancreatic carcinoma-what is necessary?
1998
The aim of the present prospective observational study was to diagnose and stage pancreatic carcinoma with a minimum of diagnostic procedures. Our experiences in 307 patients with a histologically confirmed pancreatic carcinoma show that for diagnosing pancreatic carcinoma sonography and computed tomography are sufficient in 95% of the cases. The combination of both has a sensitivity equal to that of endoscopic retrograde cholangiopancreatography (ERCP; 96.8 vs. 98.7%; n.s., χ<sup>2</sup> test). ERCP is only indicated in cases with negative sonography and computed tomography, and suspicion of pancreatic cancer. For tumor staging, the routine performance of angiography cannot be …
Evaluation of texture analysis for the differential diagnosis of focal nodular hyperplasia from hepatocellular adenoma on contrast-enhanced CT images
2018
PurposeTo explore the value of CT texture analysis (CTTA) for differentiation of focal nodular hyperplasia (FNH) from hepatocellular adenoma (HCA) on contrast-enhanced CT (CECT).MethodsThis is a retrospective, IRB-approved study conducted in a single institution. A search of the medical records between 2008 and 2017 revealed 48 patients with 70 HCA and 50 patients with 62 FNH. All lesions were histologically proven and with available pre-operative CECT imaging. Hepatic arterial phase (HAP) and portal venous phase (PVP) were used for CTTA. Textural features were extracted using a commercially available research software (TexRAD). The differences between textural parameters of FNH and HCA wer…