Search Results
Results 651 - 700 of 795
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Higashi T S - - 1995
The use of Ga-67 scintigraphy (Ga) in prostate inflammatory diseases may be restricted by the difficulty in distinguishing between the accumulation of Ga-67-citrate (Ga-citrate) in the lesion and feces. The diagnosis of prostatic abscess has been mainly made by other radiologic methods without scintigraphic studies and no finding of Ga ...
Moulton J S - - 1995
OBJECTIVE: The purpose of this study was to evaluate the efficacy of MR imaging in predicting the pathologic diagnosis of soft-tissue masses, both neoplastic and nonneoplastic, and in distinguishing benign from malignant lesions. MATERIALS AND METHODS: The imaging features of 225 soft-tissue tumors (179 benign, 46 malignant) in 222 patients ...
Paz-Bouza J I - - 1995
Fine-needle aspiration samples from 54 consecutive patients suffering from prostatic benign lesions were analyzed for both cytological diagnosis and DNA cell content, by means of standard cytological criteria and flow cytometry, respectively. Of these patients, 13 displayed prostatitis: three being classified as acute prostatitis, 7 as chronic and 3 as ...
Robertson G S - - 1995
The records of 149 patients who underwent testicular exploration for suspected malignancy were reviewed retrospectively. Malignancy was confirmed in 102 patients but benign pathology was noted in 47. Patients with benign disease were older, more likely to be Asian, gave a longer history and on examination were less likely to ...
Destexhe E - - 1995
Two techniques for evaluating argyrophilic nucleolar organizer regions (AgNOR) were compared on 74 canine mammary tumors to discriminate between benign and malignant lesions. For each lesion, direct counting of AgNOR on at least 100 cell nuclei was compared with area, perimeter, and integrated optical density AgNOR dot values determined by ...
Gagucas R J - - 1995
Prostatic adenocarcinoma of the small acinar type can be mimicked by benign proliferative lesions, such as atypical adenomatous hyperplasia (adenosis), sclerosing adenosis, nodular hyperplasia (cellular areas), lobular hyperplasia, basal cell hyperplasia, mesonephric hyperplasia, and nephrogenic adenoma. In our study, we describe another microacinar proliferation, which we have termed verumontanum mucosal ...
Agus G - - 1995
An atypical paroxysmal positioning nystagmus (PPNy), "reversed" in its directional components, is a rare finding in patients suffering from benign paroxysmal positioning vertigo (BPPV). It poses problems of pathophysiogenetic interpretation, differential diagnosis with a CNS lesion and therapeutic strategy. Such a finding was observed in 7 patients (out of a ...
Inglefield C J - - 1994
Pilomatricoma (calcifying epithelioma) is a benign tumor of the hair matrix cells that presents most frequently in childhood. Most are benign and slow growing and do not recur after excision. A small number of aggressive or malignant variants have been reported that recur if not widely excised. We report on ...
Kuflik E G - - 1994
Cryosurgery is an effective modality for treatment of many benign, premalignant, and malignant cutaneous lesions. New indications for benign lesions, new data, and recent trends towards more aggressive treatment of malignant lesions are mentioned. The differences in management between benign and malignant lesions are addressed. This article discusses cryobiology, equipment, ...
Norré M E - - 1994
The steps of the examination procedure applied for a correct diagnosis of benign paroxysmal positional vertigo (BPPV) are reviewed. A precise diagnosis is important in view of treatment of this type of vertigo by rehabilitation therapy. Clinical experience supports the concept that the diagnosis has to be based not only ...
McClure J A - - 1994
Benign positional vertigo is a common clinical entity encountered in any dizzy clinic. It is easily diagnosed on the basis of historical information and a positive Dix-Hallpike position test. The available evidence suggests that this condition is due to involvement of the posterior semicircular canal. The pathophysiology of this condition ...
Parrott L H - - 1994
In conclusion, this is a study of a 52-year-old white male who had the removal of a benign appearing nasal polyp with the surprising diagnosis of extramedullary plasmacytoma. The clinical course has been completely benign since surgery for over two years. This should alert physicians to the possibility that benign ...
Jones E C - - 1994
Prostate gland specimens account for a significant percentage of diagnostically challenging cases in surgical pathology practice. The understanding of prostate pathology has progressed, and the differential diagnosis of prostatic carcinoma has expanded to include possible premalignant lesions and several recently described pseudocarcinomatous lesions. The authors discuss the histopathology of prostatic ...
Goel A - - 1994
A case of massive benign osteoblastoma involving the clivus and atlas is reported. Usually, these tumours involve the posterior elements of a vertebra and are detected when small as a result of the usual presenting symptom of pain. The unusual site, massive size and presentation with neurological deficits are rare ...
Walsh I K - - 1993
Ten male patients presented between 1985 and 1991 with benign urethral polyps. This lesion is believed to represent a developmental error in the invagination process of the submucous glandular material of the inner zone of the prostate. The clinicopathological features of the condition are discussed and the literature is reviewed.
Levy D A - - 1993
Giant multilocular prostatic cystadenoma is a pathologically benign entity. To our knowledge only 3 cases have been reported in the literature, of which 2 were treated by means of pelvic exenteration. These lesions can occur in men of various ages, arise from the prostate and grow to massive proportions. Histologically ...
Baloh R W - - 1993
We report the clinical features and results of quantitative eye-movement testing in 13 patients with episodic positional vertigo and nonfatiguing direction-changing horizontal positional nystagmus (beating to the right with the head turned to the right and beating to the left with the head turned to the left). The benign history ...
Oyen R H - - 1993
PURPOSE: To describe a benign nodular lesion in the peripheral zone (PZ) of the prostate gland. MATERIALS AND METHODS: In 1,087 patients, the features of 722 focal lesions in the PZ or central zone of the prostate on transrectal ultrasound (TRUS) scans were retrospectively compared with histologic findings in biopsy ...
Suga K - - 1993
The difference in 201Tl-chloride (201Tl) accumulation on single photon emission computed tomography (SPECT) between 58 benign (58 cases) and 48 malignant (46 cases) thoracic lesions, each of more than 20 mm in diameter was investigated. In the 34 benign and 48 malignant lesions depicted in both early (15 min) and ...
Schned A R - - 1993
This study sought to determine whether nucleolar organizer region (NOR) counts might be of diagnostic use specifically in the frequently difficult identification of well-differentiated prostate cancer. Total silver-stained NOR (AgNOR) counts on sections were done in 50 consecutive nuclei from 22 cases of well-differentiated adenocarcinoma composed exclusively of Gleason grades ...
Goday J J - - 1993
Benign cephalic histiocytosis is a rare, benign, self-healing form of non-X histiocytosis. A case in a 3-month-old girl is reported. The papular eruption involved her face, neck, shoulders and upper trunk. Light and electron microscopic findings and clinical evolution confirmed the diagnosis. The differential diagnosis with the micronodular form of ...
Lim D J - - 1993
Symptomatic prostatic cysts are not common. We report a case of a large complex cystic pelvic mass encountered in a Jordanian man that proved to be a huge midline prostatic cyst with seminal vesicle contained within the wall. This finding represents a variation of the newly proposed diagnosis, multilocular prostatic ...
Pasanen P A - - 1993
The sera of 51 patients with malignant (n = 25) and benign (n = 26) hepatopancreatobiliary disorders were analysed by 1H magnetic resonance spectroscopy (NMR) in order to distinguish between malignant and benign diseases causing jaundice and/or cholestasis. Macromolecular linewidths were determined both manually and automatically with a computed analysis, ...
Bentley B B - - 1993
The physical urticarias compromise a heterogeneous group of disorders characterized by their propensity to form urticarial lesions after exposure to certain physical stimuli, such as heat, vibration, or cold. Although generally benign, systemic hypotension and angioedematous airway compromise are known life-threatening complications. We present the case of a man who ...
Ishigooka M - - 1993
We described 4 cases of polyps of the prostatic urethra. Three of them had adenomatous polyp with prostatic epithelium and 1 showed polypoid urethritis. These lesions were worth noting as a cause of hematuria, dysuria or hematospermia. Polyps or papillary lesions of the prostatic urethra appear to be more common ...
Placik O J - - 1992
Tumors of neurogenic (ectodermal) origin are well-described causes of nasal deformity. We present a patient with a benign mesodermal tumor (unclassified spindle cell) producing nasal deformity. A retrospective review of the two senior authors' records provided an additional three patients with nonvascular benign mesodermal nasal masses (fibroma and leiomyoma). Benign ...
Lloyd S N - - 1992
Indices of mitotic potential may improve prognostic discrimination in patients with malignant disease. Ki-67 is a monoclonal antibody directed against an unknown proliferation antigen which has been shown to be a measure of mitotic potential. Sixty-four benign and eighty malignant prostatic biopsies were stained with the Ki-67 antibody. Nuclear and ...
Troost B T - - 1992
We present a common cause of vertigo, benign positional paroxysmal vertigo (BPPV), and its history, diagnosis, and therapy. BPPV is suggested by history, readily diagnosed by office examination, and cured by appropriate exercise therapy. Since the condition is so common and often unrecognized, physicians are encouraged to consider BPPV as ...
López J I - - 1992
A case of vaginal rhabdomyoma in 35-year-old healthy woman is presented. The lesion, a pedunculated polyp measuring 1.2 cm in diameter, was located in the anterior wall of the vagina. This is an extremely rare entity that pursues a benign course. Light and immunohistochemical features are commented and selected literature ...
Mostofi F K - - 1992
In this presentation the authors review the pathology of prostatic carcinoma (PCa), and discuss criteria for pathologic diagnosis, premalignant lesions, lesions that simulate PCa, immunopathology, special types of PCa, effects of therapy on the prostate, and recent efforts to improve diagnostic and prognostic capabilities. The possible role of study of ...
Wang N N Department of Medical Radiobiology, Karolinska Institute, Stockholm, - - 1992
Fine needle biopsies from 70 patients with prostate carcinoma and 10 patients with benign hyperplasia were used to study area, variation in size and form factors of the nuclei by image analysis. The results were related to DNA ploidy of the cell populations as measured by flow cytometry, cytologic grade ...
Shukla V K - - 1992
The differentiation of subungual haematoma from benign and malignant nevoid lesions is a common clinical problem. To determine the incidence of benign subungual naevi in the general population, the digits of the hands and feet of 1000 white patients were examined. These were consecutive patients presenting to hospital for problems ...
Harkaway K S - - 1992
Benign symmetric lipomatosis, or Madelung's disease, is a rare condition of undetermined cause characterized by symmetrical subcutaneous masses that consist of normal adipose tissue and are located predominantly in the head and neck areas. A case of benign symmetric lipomatosis in a patient with unusual psoriasis and excessive alcohol intake ...
Ranschaert E R - - 1992
Cystadenoma of the seminal vesicle is an extremely rare benign tumor, which to our findings has only been mentioned earlier in seven previous reports. It is a benign and mostly multilocular tumor, thought to originate from embryologic remnants. Preoperative diagnosis is rarely made. Complete extirpation is the correct treatment. We ...
Hansen A B - - 1992
Silver-stained nucleolar organizer regions (AgNORs) were studied in 10 hyperplastic, 10 inflamed, nine prostatic intraepithelial neoplastic (PIN) and 20 malignant prostatic lesions. Optical disector measurement on 15 micron sections showed that upper frequency limits for 1.5 microns and 2.0 microns AgNOR particles were 10% and 2% in benign lesions and ...
Rogers D L - - 1991
Acanthosis nigricans (AN) is a dermopathy with a distinctive appearance that facilitates its diagnosis. Although an external condition, it is associated with a wide variety of less obvious internal conditions, either benign or malignant. Insulin resistance figures prominently in its benign associations and plays a primary role in its development. ...
Lloyd S N - - 1991
A modified silver stain technique for visualizing nucleolar organizer regions (AgNOR counting) was applied to 24 benign and 23 malignant prostatic biopsies. Marked inter-observer variation was found, particularly in sections with high AgNOR counts. After averaging the AgNOR counts of both observers, there was no significant difference in counts between ...
Banerjee A K - - 1991
A new technique for dilatation of colorectal anastomotic strictures--wire-guided balloon coloplasty--is described. It is suitable for high strictures, may be performed without general anaesthetic and is repeatable. It does not require endoscopy and may be used to relieve obstructive symptoms in both benign and malignant strictures so avoiding the need ...
Shah I A - - 1991
The basal cell layer (BCL) is believed to be absent in malignant but present in nonmalignant epithelial lesions of the prostate. Using the avidin-biotin-peroxidase complex (ABC) immunoperoxidase method, we examined the value of the monoclonal antibody cocktail MA-903, which stains selectively the prostatic BCL layer, in the distinction between benign ...
Dikkers F G - - 1991
The names given to a number of benign lesions of the vocal folds are not well standardized and lead to difficulties in comparing treatment. In the present study photographs of benign lesions of the larynx were presented to groups of clinicians together with a questionnaire, and the answers analysed. The ...
Maluf H M - - 1991
Two examples of large, multiloculated, cystic tumors that arose within the pelvis in men of 28 and 37 years of age are described. The tumors were composed of glands and cysts lined by prostatic-type epithelium lying in a hypocellular fibrous stroma. The prostatic nature of the lesions was confirmed by ...
Rubenstein J B - - 1991
Numerous benign and malignant entities can disrupt the normal prostatic parenchymal architecture producing hypoechoic lesions in the peripheral zone. We report two cases of granulomatous prostatitis mimicking carcinoma. The differential diagnosis of hypoechoic lesions and the etiologies of granulomatous prostatitis are discussed. All hypoechoic lesions in the peripheral zones of ...
Gerscovich E O - - 1991
Nontraumatic lesions of the clavicle are infrequent. Of these, malignant tumors are more common than benign lesions. From January 1988 to January 1990, we examined 17 patients with benign lesions of the clavicle; in 8, the morphologic appearance of the lesion raised the possibility of malignancy in the differential diagnosis. ...
Hunt S J - - 1990
Four cases of large eccrine acrospiroma (three benign, one malignant) are reported. The benign tumors involved the lower extremities of two women and one man (73 to 89 years of age). The duration of the lesions ranged from 10 to 20 years. The malignant tumor involved the left side of ...
Norton T M - - 1990
Benign prostatic hyperplasia, diskospondylitis at the T13-L1 intervertebral disk space, and penile paresis were diagnosed in a 16-year-old male ocelot. Treatment consisted of castration for the benign prostatic hyperplasia and long-term administration of antibiotics for the diskospondylitis. On physical examination 8 weeks after initial referral, the prostate gland was no ...
Piattelli A - - 1990
Benign cementoblastoma is a rare odontogenic tumour localized in the jaws of young people. Benign cementoblastoma has characteristic radiologic and microscopic features and it appears to be fused to the tooth roots. The most important differential diagnosis is-with a benign osteoblastoma. The tumor should be enucleated and the teeth extracted. ...
Nghiem H T - - 1990
As the use of ultrasound (US) for evaluating the prostate gland has grown, so has the variety of cystic prostatic lesions that can be identified with US. We review many of these cystic lesions seen in our department over the past several years. Lesions discussed include müllerian duct cyst, prostatic ...
Löpez-Beltran A - - 1990
A case of malignant phyllodes tumor of the prostate, with clinical course of recurrence and pulmonary metastasis is described in a thirty-eight-year-old man. Histologically the tumor was characterized by a fibrosarcoma-like pattern with adjacent changes of fibroadenoma and phyllodes type of prostatic atypical hyperplasia. The pathology, histogenesis, differential diagnosis, and ...
Hansen A B - - 1990
Silver-stained nucleolar organiser regions (AgNORs) were studied in 10 hyperplastic, 5 intra-epithelial neoplastic and 30 malignant prostatic lesions. Total AgNOR counts and types were compared with histological features. The total AgNOR count per nucleus was significantly higher (P less than 0.05) in prostatic intra-epithelial neoplasia (PIN) and adenocarcinoma compared with ...
Schiøtz H A - - 1990
A 46-year-old woman had a 13 cm long benign fibroepithelial polyp arising in the right lower ureter and prolapsing through the urethral meatus. She also had uterine fibromyomata. She made an uneventful recovery after laparotomy with supravaginal amputation of the uterus and resection of a 1-cm segment of the ureter. ...
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