Search Results
Results 551 - 600 of 795
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Lazović G - - 2007
Retroperitoneal angioleiomyoma is a benign mesenchymal neoplasm that is composed of smooth muscle cells and thick-walled vessels. In a 36-year-old patient a retrouterine and retroperitoneal tumor, 70 x 65 x 50 mm in size, was discovered during a surgical procedure due to uterine myoma. The tumor had a soft consistency ...
Abbasi Naheed R - - 2007
An 80-year-old man presented with a 50-year history of asymptomatic, subcutaneous masses on the arms, trunk, and legs. His father and maternal grandmother had had similar lesions. Histopathologic examination showed a benign angiolipoma; the same diagnosis has been made on several previous biopsy specimens. This patient's history and physical examination ...
Shoman N - - 2007
Positional and positioning vertigo and nystagmus syndromes are usually due to peripheral vestibular dysfunction. The most common form is benign paroxysmal positioning. In this paper, we discuss more serious aetiologies in the differential diagnosis for patients presenting with a history suggestive of benign paroxysmal positioning vertigo. We draw attention to ...
Kim Ye-Sung - - 2006
Periodic lateralized epileptiform discharges (PLEDs) are defined as spikes or sharp waves occurring at an approximately regular interval. PLEDs are subdivided into PLEDs proper and PLEDs plus in Reiher's classification, but since this does not sufficiently reflect the pleomorphism of PLEDs, we propose a new subclassification scheme of PLEDs, and ...
Merseburger Axel S - - 2006
In order to evaluate the molecular heterogeneity of prostate cancer, this study examined the expression of Akt-pathway related parameters within the cancerous prostate gland. PTEN, p-Akt and p27kip1 are known to be altered in prostate cancer. Tissue samples from malignant, tumor adjacent benign and benign areas of 25 whole mounted ...
Bhatt Shweta - - 2006
Ultrasound plays an important role and adds essential information in diagnosing benign intrascrotal lesions. Characterization of benign intrascrotal lesions with sonography, in combination with clinical assessment, can lead to nonsurgical management or testicular sparing surgery. We present important sonographic features of benign intrascrotal lesions, including extratesticular lesions: adenomatoid tumors, papillary ...
White Matthew L - - 2006
PURPOSE: The purpose of this study was to analyze the relationship of apparent diffusion coefficients (ADCs) to the malignant degree and the histopathological features of the lesions in the nasal cavity, the paranasal sinuses, and the adjacent skull base. METHOD: We evaluated the differences of the ADCs between the malignancies ...
Roberts Richard A - - 2006
This article presents an approach to differentiation of migrainous positional vertigo (MPV) from horizontal canal benign paroxysmal positional vertigo (HC-BPPV). Such an approach is essential because of the difference in intervention between the two disorders in question. Results from evaluation of the case study presented here revealed a persistent ageotropic ...
Gonzalez-Gonzalez Abel - - 2006
CONTEXT: Insulinomas may be regarded as potentially malignant. A long follow-up period is needed to detect any possible recurrence, even if the initial diagnosis was of a benign insulinoma. CASE REPORT: We present the case of a 76-year-old woman with liver metastases due to a malignant insulinoma, which had been ...
Barroeta J E - - 2006
BACKGROUND: Several immunohistochemical markers have been used to aid in the diagnosis of follicular-derived lesions of the thyroid (FDLT). In this study we analyze the diagnostic efficacy of an immunopanel of antibodies to cytokeratin-19 (CK19), galectin-3 (GAL-3), HBME-1, anti-MAP kinase (ERK), ret-oncoprotein (RET), and p16 using a tissue microarray consisting ...
Boudewyns A N - - 2006
We present the case of a 2-year-old girl who was referred to the ENT Department of the Antwerp University with a bony obstruction of the left side of the nose. The lesion originated from the ethmoid roof and the middle turbinate and extended into the nasopharynx. A partial functional resection ...
Franzoni E - - 2005
The authors describe the so-called benign convulsions of infancy and confirm the existence of benign nonfamilial infantile convulsions during the first 2 years of life and their benign course. The authors evaluated 58 patients: 17 subjects had a family history of benign epilepsy, and 41 did not. No clinical differences ...
Viskin Sami - - 2005
Idiopathic ventricular tachycardia (VT) originating from the right ventricular outflow tract (RVOT-VT) and idiopathic RVOT-extrasystoles are generally considered benign arrhythmias. We described three cases who originally presented with typical "benign looking" RVOT-extrasystoles or RVOT-VT but developed malignant polymorphic VT during follow-up. The unusual aspect of their RVOT-extrasystoles was their coupling ...
Yamaguchi Takehiko - - 2005
Chordomas are rare malignant bone tumors primarily involving both ends of the axial skeleton that present as destructive bone lesions with a large soft tissue mass. Chordomas were previously believed to arise from notochordal remnants. However, recent studies suggest the possibility that chordomas arise from benign notochordal cell tumors. We ...
Choi Seung Hong - - 2005
PURPOSE: To evaluate retrospectively the use of multiphasic helical computed tomography (CT) to differentiate malignant and benign common bile duct (CBD) strictures in patients with only a focal CBD stricture and to determine predictors for this differentiation. MATERIALS AND METHODS: Institutional review board approval and informed patient consent were not ...
England R A - - 2005
Malignant and benign causes of inferior vena cava (IVC) occlusion and compression are recognized. Cases of benign IVC compression with associated distal thrombus formation have not however been frequently described. We present two cases of benign external IVC compression associated with distal thrombus formation; one resulting from a giant, benign, ...
Mushtaq Romila - - 2005
EEG is a valuable tool that assists in the accurate diagnosis of seizure disorders. The precise interpretation of EEG requires an ability to recognize patterns that are benign in nature but may be misinterpreted as indicative of a seizure tendency. This review will summarize benign variants encountered in adult EEGs ...
Ko Christine J - - 2005
While cell-cycle markers have been used to differentiate benign vs. malignant lesions and to classify malignant lesions, benign keratoses have not been well studied using such markers. We hypothesized that inflammation or irritation of benign keratoses may be related to a shift in the cell cycle. We compared the immunohistochemical ...
Murata Shin-ichi - - 2005
We propose a novel application of microscopic Forster resonance energy transfer (FRET) to clinical cytological diagnosis based on sensitive measurements of distance changes between fluorescently labeled deoxyribose nucleic acid (DNA) molecules. We have employed the microscopic FRET imaging for investigation of six papillary carcinomas and eight benign cases. In each ...
Chang Ying-Hsu - - 2005
This report details a case of prostatic carcinoma coexisting with a hemorrhagic cyst in a 66-year-old man; this combination was a challange for diagnosis and mamagement. The patient presented with lower urinary tract symptoms and a serum prostate-specific antigen (PSA) level of 33.3 ng/ml. Magnetic resonance imaging of the prostate ...
Praz Valentin - - 2005
The lymphangioma is a well-recognized benign tumor most frequently encountered in infancy and childhood. The kidneys are rarely involved. Despite its benign nature, most of the patients were treated by partial or radical nephrectomy. We describe a case of bilateral perirenal lymphangioma in a 33-year-old man for whom we chose ...
Saygan-Karamürsel B - - 2005
OBJECTIVE: The aim of this study was to evaluate quantitative telomerase activity in malignant, benign and normal gynecological tissue samples by using the Telomerase-PCR ELISA kit, and to determine a cut-off level for malignancy by this quantitative method. MATERIALS AND METHODS: Fifty gynecological tumors, 27 benign gynecological disorders and 29 ...
de Veld Diana C G - - 2004
Autofluorescence spectroscopy shows promising results for detection and staging of oral (pre-)malignancies. To improve staging reliability, we develop and compare algorithms for lesion classification. Furthermore, we examine the potential for detecting invisible tissue alterations. Autofluorescence spectra are recorded at six excitation wavelengths from 172 benign, dysplastic, and cancerous lesions and ...
Yu Yang-Hao - - 2004
BACKGROUND: This study examines the usefulness of thallium-201 single photon emission computed tomography ((201)Tl SPECT) in differentiating pulmonary malignancies from benign lesions by using dual phase (201)Tl scintigraphy. METHODS: One hundred and six patients with thoracic lesions and confirmed diagnoses were assessed by (201)Tl chest SPECT examinations; of these 106 ...
Butteriss David J A - - 2004
The differentiation of benign from malignant testicular lesions is important to avoid unnecessary surgical intervention but is often difficult, particularly in the case of focal hypoechoic lesions. We present the description of 3 cases of an echogenic ring that appeared around a hypoechoic testicular mass on sonograms. The ring proved ...
Deokule S - - 2003
PURPOSE: To determine the accuracy of the clinical diagnosis of benign eyelid skin lesions in a minor operation theatre (MOT) setting. METHODS: This study was carried out prospectively over a 6-month period. Subjects attending the minor operation theatre set-up with eyelid skin lesions were assessed and lesions were labelled as ...
Parham Kourosh - - 2003
We report the first documented case of reticulohistiocytoma of the external auditory canal in a 15-year-old male. Reticulohistiocytoma is a rare diagnosis in children. Reticulohistiocytoma, a benign lesion, belongs to a family of histiocytosis disorders which range from benign to malignant. Although histiocytic disorders are uncommon, they should be included ...
Liu David M - - 2003
Pneumatosis intestinalis (gas in the bowel wall) is often a benign condition, but it may mimic bowel ischemia or infarction and lead to unnecessary surgical intervention, especially when associated with pneumoperitoneum. We present a case of benign pneumatosis intestinalis with massive pneumoperitoneum and discuss various distinguishing features that may aid ...
Mathur S K - - 2003
In an attempt to assess the significance of mucin stains in benign and malignant lesions of prostate, 200 prostatic biopsies in the department of Pathology, Pt. B.D. Sharma PGIMS, Rohtak were studied. All the biopsies were subjected to PAS and alcian blue staining along with H&E stain. Neutral mucin (PAS ...
Huang Yau-Li - - 2003
Described here is the use of detecting TLS/FUS-CHOP fusion transcripts to confirm the diagnosis of a myxoid liposarcoma by nested reverse transcription-polymerase chain reaction assay using archival formalin-fixed, paraffin-embedded tissues of a young man with a benign-looking myxoid tumor on his upper extremity, which is often misdiagnosed clinically or histopathologically ...
Shabaik A - - 2003
Many significant benign and malignant nonepithelial tumors and stromal tumor-like lesions arise in the prostate gland. Although such lesions are rare, their recognition by the pathologist is essential because their treatment and prognosis are quite variable. In this review, lesions of the specialized prostatic stroma, that is, lesions that can ...
Harisinghani M G - - 2003
AIM: To evaluate the halo sign for accurately distinguishing benign from malignant colonic wall thickening. MATERIALS AND METHODS: Computed tomography (CT) examinations of 92 patients (70 men; 22 women; mean age 57 years) with pathologically proven colonic wall thickening (51 benign and 41 malignant) were retrospectively reviewed in a blinded ...
DiBiase Steven J - - 2003
Over the last decade, the use of stereotactic radiosurgery (SRS) for the treatment of intracranial lesions has grown significantly. In addition to malignant brain tumors and vascular malformations, benign tumors have also been treated with SRS. Although surgical resection has long been considered the gold standard in the management of ...
Chang Sung-Goo - - 2003
We report a case of symptomatic intraurethral prostatic cyst in a 42-yr-old man without clinical evidence of benign prostatic hyperplasia. The intraurethral cyst makes it unique from the all previously reported cases of prostatic cysts located medially within the prostate. Transurethral resection of the cyst with limited resection of the ...
Nasir A - - 2002
Needle biopsy is the mainstay of definitive diagnosis of prostate cancer (PCA). While prostate-specific antigen (PSA) screening has facilitated early diagnosis of PCA, it has also resulted in an increase in the proportion of prostate biopsies showing various preneoplastic lesions (PNLs). At times such lesions are the sole finding in ...
Tsujimoto Yuichi - - 2002
BACKGROUND: Postatrophic hyperplasia (PAH) is one of the patterns of prostatic atrophy but has been regarded as a precursor of prostatic cancer (PCA) because of its possible increase in proliferative activity compared with simple atrophy and morphologic mimicry of PCA. METHODS: Radical prostatectomy specimens obtained from 28 patients with PCA ...
Shah Rajal B - - 2002
The basal cell-specific cytokeratin antibody (34betaE12) is widely used to aid in the diagnosis of cancer in challenging prostate needle biopsies (NBX) and transurethral resections of the prostate (TURP). Because prostate carcinoma (PCa) lacks basal cells, the absence of basal cell as determined by 34betaE12 can aid in the confirmation ...
Helpap Burkhard - - 2002
Nonepithelial tumor-like lesions of the prostate include benign prostatic hyperplasia-associated stromal nodules, postoperative spindle cell nodules, benign mesenchymal tumors and sarcomas. These lesions and neoplasms are rare but need to be exactly classified for adequate treatment. This review focuses on the differential diagnosis between the various benign and malignant entities ...
Senguptal Sanjay - - 2002
During a period of 12 years, 874 salivary gland lesions were aspirated of which 740 (86.85%) were from parotid gland. Cystic, inflammatory & neoplastic lesions were 25.25%. 54.45% & 20.30%, respectively. Plcomorphic adenoma was the commonest benign & adenoid cystic carcinoma was the most frequent malignant tumors.On cytohistologic correlation, sensilitvity ...
Yamaguchi Takehiko - - 2002
The first histologically confirmed case of a classic chordoma arising in a precursor benign notochordal lesion is presented and the differential diagnosis between benign and malignant notochordal lesions is discussed. A 57-year-old man presented with a classic chordoma in the coccyx. The resected specimen demonstrated a small intraosseous benign notochordal ...
Benetti Mara Regina Netto - - 2002
Cultures of 31 breast tumors, being 20 carcinomas and 11 benign lesions, were cytogenetically analysed. Clonal chromosome aberrations were detected in 16 carcinomas and in 4 benign lesions. Nine carcinomas and 2 benign lesions had multiple cytogenetically unrelated and related clones, whereas a single abnormal clone was observed in 7 ...
Shin Masaru - - 2002
BACKGROUND: An increasing number of pharmacologic agents that induce reversible androgen deprivation are available for neoadjuvant endocrine therapy (NET) for prostatic adenocarcinoma (PCA). If information about the regression pattern of PCA after NET is recognized, more effective decision-making for subsequent therapies such as prostatectomy and radiotherapy, will be possible. METHODS: ...
Nabi G - - 2002
A 65-year old male presented with obstructive voiding symptoms and recurrent hematuria following transurethral resection of malignant prostates. Following an unsuccessful attempt at catheterization, urethroscopy revealed narrowing of anterior urethra secondary to multiple nodular lesions. Biopsy of lesion showed adenocarcinoma positive for prostate specific antigen. This rare presentation has been ...
Blakeborough A - - 2001
PURPOSE: To assess the accuracy of radiologic interpretation, in the absence of clinical information, in the differentiation of benign and malignant sigmoid strictures at barium enema examination. MATERIALS AND METHODS: On two occasions, four independent observers retrospectively assessed examination findings in 78 patients with documented sigmoid strictures (43 benign, 35 ...
Furugaki K - - 2001
We describe a rare case of a benign pseudotumorous lesion (fibroangiomyomatous hyperplasia with elastosis) in the gallbladder in a 44-year-old Japanese woman, and discuss the rarity of elastosis in the gallbladder. To our knowledge, this case may be the first report of a pseudotumorous lesion of the gallbladder with elastosis ...
Federle M P - - 2001
Using helical CT and rapid i.v. injection of contrast material, benign hepatic masses are discovered in at least 20% of subjects. To minimize expensive and invasive evaluation, an orderly approach to the interpretation of these lesions is necessary. Many benign lesions have a near pathognomonic appearance on a properly performed ...
von Brevern M - - 2001
The authors present a patient with benign paroxysmal positional vertigo of the right horizontal semicircular canal who developed persistent vertigo with spontaneous horizontal nystagmus to the left and caloric hypoexcitability on the right after a head shaking maneuver. Both spontaneous nystagmus and canal paresis resolved after repeated shaking of the ...
Kleer C G - - 2001
The histologic distinction between benign and malignant Phyllodes tumors (PT) is often difficult and arbitrary. We analyzed a group of benign and malignant PT to determine whether specific histologic features and expression of Ki-67 and p53 could be useful in distinguishing benign PT from malignant tumors. We also determined whether ...
Brooks A - - 2001
The aim of these experiments was to assess the effect of an educational brochure on the ability of naive observers to discriminate skin cancers from benign lesions, and to investigate possible new strategies to assist observers in performing this task. A two-alternative forced choice paradigm was used to investigate the ...
Kuwahara R T - - 2001
BACKGROUND: Cryosurgery is one of the most common treatment methods in the dermatologists armamentarium. We describe a method combining forceps and a cotton applicator to freeze benign lesions for practitioners who prefer to use cotton-tipped applicators instead of a cryosurgery spray device. METHODS: We describe the technique using common in-office ...
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