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Search Results: 1 - 10 of 2403 matches for " benign neoplasm "
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Intramural leiomyomas of the bladder in asymptomatic men
Lopes, Roberto I.;Lopes, Roberto N.;Srougi, Miguel;
International braz j urol , 2003, DOI: 10.1590/S1677-55382003000300011
Abstract: bladder leiomyomas are rare benign mesenchymal tumors, which account for less than 0.43% of all bladder tumors with approximately 200 cases described in the literature. these tumors may be classified into 3 different locations: endovesical, intramural and extravesical. endovesical is the most common form, accounting for 63-86% of the cases, while intramural occurs in 3-7% and extravesical in 11-30%. the intramural form, especially small tumors, may not produce symptoms hardening detection. we report two cases of intramural bladder leiomyomas in asymptomatic men observed incidentally by transabdominal ultrasonography during the follow-up of benign prostatic hyperplasia. we discuss the diagnosis and management of these lesions.
Leiomioma renal sintomático: una masa renal de difícil diagnóstico
Clemente Ramos,L.M.; Candia Fernández,A.; Allona Almagro,A.;
Actas Urológicas Espa?olas , 2003, DOI: 10.4321/S0210-48062003000700010
Abstract: renal leiomyoma is a benign mesenchymal tumour that, albeit very rare, has to be ruled out when a renal mass has been diagnosed. this tumour can arise from any organ of the genitourinary tract with smooth muscle cells, being the renal capsule the most frequent origin. as its behaviour is not aggressive, nephron-sparing surgery is indicated. however, as it is difficult to preoperatively differentiate the leiomyoma from the adenocarcinoma, the former is commonly diagnosed after examination of the entire organ surgically removed.
Intramural leiomyomas of the bladder in asymptomatic men
Lopes Roberto I.,Lopes Roberto N.,Srougi Miguel
International braz j urol , 2003,
Abstract: Bladder leiomyomas are rare benign mesenchymal tumors, which account for less than 0.43% of all bladder tumors with approximately 200 cases described in the literature. These tumors may be classified into 3 different locations: endovesical, intramural and extravesical. Endovesical is the most common form, accounting for 63-86% of the cases, while intramural occurs in 3-7% and extravesical in 11-30%. The intramural form, especially small tumors, may not produce symptoms hardening detection. We report two cases of intramural bladder leiomyomas in asymptomatic men observed incidentally by transabdominal ultrasonography during the follow-up of benign prostatic hyperplasia. We discuss the diagnosis and management of these lesions.
CARCINOMA COMPLEJO DE GLáNDULA MAMARIA, ACANTOMA QUERATINIZANTE INFUNDIBULAR Y MASTOCITOMA TIPO III EN UN CANINO
Ochoa-Amaya,JE; Pedraza-Castillo,LN; Ciuoderis-Aponte,KA;
Revista MVZ Córdoba , 2009,
Abstract: among the tumors, skin tumors are seen most frequently in veterinary medicine. the infundibular keratinizing acantoma (ika) is the less common tumor of the follicular neoplasms, in contrast, mastocytoma (cm) is the most common tumor of mesenchymal tumors in dogs as well as a canine mammary tumors are the most common tumors in female (25 to 50% of all tumors) being malignant 41 to 50 per cent of them. this paper seeks to document the findings of anatomopathology and presentation of three rare cutaneous neoplasms in a female dog. a case of a canine, female, 11 years old, poodle cross breed that was remitted to consultation by emesis 15 days ago and the presence of masses in the abdomen and mammary gland. the patient was euthanized. the autopsy showed multiple rounded masses of varying sizes in the skin of the abdomen and mammary glands and in the parenchyma of the spleen and liver. the tissue samples were fixed in 10% buffered formalin and taken to the laboratory for routine histological processing. it was diagnosed complex mammary carcinoma, a metastatic type iii cm and ika. it was showed two malignant tumors and one benign skin tumor in the same animal and was reported the simultaneous and infrequent appearance of the cm associated with ika.
Benign and malignant neoplasias in 261 necropsies for HIV-positive patients in the period of 1989 to 2008
Micheletti, Adilha Rua;Macedo, Ana Carolina Sandoval;Silva, Gisele Barbosa e;Silva, Ana Cristina Araújo Lemos da;Silva-Vergara, Mário Leon;Murta, Eddie Fernando Candido;Adad, Sheila Jorge;
Revista do Instituto de Medicina Tropical de S?o Paulo , 2011, DOI: 10.1590/S0036-46652011000600002
Abstract: considering that there are some studies with autopsies from aids describing only malignant neoplasias and that changes can occur after the introduction of highly active antiretroviral therapy (haart), our objectives were to analyze the frequency of benign and malignant neoplasms in aids patients in the periods of both pre- and post-haart. this is a retrospective study with 261 autopsies of hiv-positive patients between 1989 and 2008 in uberaba, brazil. sixty-six neoplasms were found (39 benign, 21 malignant and six premalignant) in 58 patients. the most frequent malignant neoplasms were lymphoid, in 2.7% (four non-hodgkin lymphoma, one hodgkin, one multiple myeloma and one plasmablastic plasmacytoma), and kaposi's sarcoma, in 2.3% (six cases). the most frequent benign neoplasms were hepatic hemangiomas in 11 (4.2%) of 261 cases and uterine leiomyoma in 11 (15.7%) of 70 woman. in the pre-haart period eight (9.8%) benign neoplasias and four (4.9%) malignant occurred in 82 patients; in the post-haart period, 29 (16.2%) benign and 17 (9.5%) malignant were present; however, the differences were not significant. we conclude that the introduction of haart in our region doesn't look to have modified the frequency of neoplasms occurring in patients with hiv.
Fibrolipoma gigante de la mejilla: a propósito de un caso
Scivetti,M; Di Cosola,M; Lo Muzio,L; Pilolli,GP; Maiorano,E; Capodiferro,S; Vignoletti,F; Favia,GF;
Avances en Odontoestomatología , 2006, DOI: 10.4321/S0213-12852006000100004
Abstract: lipomas are common soft tissue mesenchymal neoplasms, rare in the oral cavity, representing 1% of all benign oral tumors. fibrolipoma is a histological variant of the classic lipoma which normally affects buccal mucosa, floor of the mouth, tongue and lips. in this article is presented a rare case of fibrolipoma of the cheek and are discussed all the aspects of diagnosis, histology and surgical treatment, according to literature data.
Endobronchial chondroma: a rare benign bronchial neoplasm
Antonios Papagiannis,Kosmas Tsakiridis,Stamatis Arikas,Efstratios Tzamtzis
Pneumon , 2010,
Abstract: SUMMARY. Endobronchial chondroma is a rare benign endobronchial tumour that may lead to obstruction, infection and destruction of lung tissue. Radical resection is curative, except when the chondroma is associated with other malignant neoplasms (Carney’s triad). We describe a case of endobronchial chondroma in a young man which was successfully managed by segmentectomy. Pneumon 2010, 23(2):168-175.
Benign tumor of oral soft tissue “Oral hemangioma”: Apropos of a case (Tumor benigno de tejido blando oral “Hemangioma oral”: A propósito de un caso)
Castro Carlos Félix,Raimondi Romina,Martinez-Carvajal Wilson,Martinez-Nina Saúl
Revista Médico-Científica “Luz y Vida” , 2011,
Abstract: Oral Hemangiomas are benign tumors that produce real proliferationof small vessels forming in this way syndromic characteristicsof the lesion. Presenting a high incidence in oral cavity due to itshigh vascularity.Formed by rapidly proliferating endothelial cells in early childhood,which eventually regress and develop pathologies in vascularplexus in both oral cavity and mucous membranes, which frequentlyappear in early childhood (75% of cases) having its greateststeady peak over time, when is exacerbated and stops.The presentation of this case is characterized by the appearance ofan oral hemangioma in adulthood (38 years). A male patient presenteda tumor in the right mandible region, to which it was proceededto perform a biopsy. The histopathological diagnosis was: Mixedhemangioma (capillary-venous). -RESUMEN: Los hemangiomas orales, son neoplasias benignas verdaderas queproducen proliferación de vasos peque os conformando de esta formalas características sindronómicas de la lesión. Presentando unagran incidencia en cavidad oral por la gran vascularización, red decapilares orales y vasos peque os que presenta.Formado por células endoteliales de rápida proliferación en la primerainfancia, que con el tiempo involucionan y desarrollan patologíasen los plexos vasculares, tanto en cavidad oral y en mucosas,que frecuentemente aparecen en la primera infancia (75% de loscasos) teniendo su pico máximo estacionario con el paso del tiempo,donde se exacerba y se estaciona.La presentación de este caso se caracteriza por la aparición de unhemangioma oral en la edad adulta (38 a os). Paciente masculinoque presento una lesión tumoral en la región mandibular derecha, ala cual se procedió a realizar una biopsia, teniendo como diagnosticohistopatológico: hemangioma mixto (capilar-venoso).
A giant benign clear cell hidradenoma on the anterior trunk
Gulsen Tukenmez Demirci,Guldehan Atis,Ilknur Altunay,Damlanur Sakiz
Dermatology Reports , 2011, DOI: 10.4081/2743
Abstract: Clear cell hidroadenoma (CCA) is a uncommon variant of bening cutaneous adnexial tumors. These tumors are clinically asymptomatic, solitary dermal nodules. they occur most frequently on the scalp, face, abdomen and the extremities. Growth is slow and malignant change is rare. 45- year-old woman presented us with a nodule with a central ulceration and a minimal hemoragic discharge on her anterior abdomen wall which had begun 4 years ago as a small nodular asymptomatic lesion. On dermatological examination there was a 6.5x4x5 cm non-tender, soft reddish purple nodule with lobular appearence and ulceration. In the laboratory investigations, all the hematologic and biochemical tests were normal. A CT scan demonstrated a cyctic tumor with lobulated countour with contrast enhancement. The lesion excised totally. In histopathological examination the tumor was composed of biphasic smaller dark polygonal cells and larger clera cells and coarse nuclear chromatine. There were duct like structures. Immunohistochemical investigation was done for the suspicion of malignancy. Cytoplasm of clear cells and duct like structures showed PAS positive and d-Pas resistant staining. There was a positive reactivity to epithelial membrane antigen and carcinoembrionic antigen. The mitotic index in Ki 67 examination was low. All these findings confirmed the diagnosis of bening CCA.
Fibroma Cemento Osificante: Análisis Clínico, Radiológico e Histológico de 2 Casos en una Misma Familia
Vargas F,Ilich; Mayer O,Cristopher; Hervozo S,Percival; Navia G,Eduardo;
International journal of odontostomatology , 2011, DOI: 10.4067/S0718-381X2011000300011
Abstract: the cemento-ossifying fibroma (cof) is a benign fibro-osseous neoplasm of odontogenic origin, that is preferentially localized in the molar and premolar mandibular area. our goal is to present cases of cof that occurred within the same family, describing clinical, radiological and histological characteristics, in addition to treatment and monitoring of each case.two patients who are brothers, treated at the hospital de carabineros, who had mandibular cof, were included in this study. the complete evolution of each case is presented, highlighting the family component of this uncommon disease. all patients were treated with complete removal of the lesion and filling the bone defect with autologous iliac crest graft or synthetic particulated bone graft (chronos?). one patient had recurrence of the injury and then presented a new cof on the contralateral side. in this type of injury it is very important to use all the diagnostic tools within our reach. the rarity of these lesions, and the great similarity of both clinical, radiological and histological features with other pathological conditions of the jaws, and a poorly conducted study can lead to wrong diagnosis and treatment affecting the quality of life of patients. the treatment of these lesions is conservative, and relapses are rare.
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