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3.
Arch Esp Urol ; 61(4): 485-98, 2008 May.
Artigo em Espanhol | MEDLINE | ID: mdl-18592766

RESUMO

OBJECTIVES: To study paratesticular malignant fibrous histiocytomas (FHM) from the clinical, histological, immunohistochemical and histogenetic, point of view. METHODS: Through Medline and not index-linked search of international scientific literature we have found a total of 77 cases of paratesticular FHM that globally create diagnostic, terminological and therapeutic problems. RESULTS: We include the case number 78 of FHM of spermatic cord, that presents a few special characteristics (not described before) of cutaneous fistula and infiltration of an inguinal leiomyoma, with histological and immunohistochemical confirmation. We performed a conceptual review of this type of tumours, including the evaluation of contradictions and reclassifications that has undergone from its first description, which causes that they are underestimated and their real prevalence in international series is very variable: from 7 to 37% of paratesticular sarcomas. Also, the fact of their low incidence has determined the lack of protocols for diagnosis and treatment. CONCLUSIONS: Paratesticular tumours, although infrequent, have a high rate of malignancy. The FHM concept has varied throughout the last 15 years. Today, this term is synonymous of pleomorphic undifferentiated sarcoma and has been an exclusion diagnosis (Vimentin [+]/ CD 68 [+]--occasionally--without ultrastructural differences), reserving the inflammatory subtype for which they have an inflammatory and histiocytic component. The accomplishment of an intraoperatory biopsy is essential in this location, since it is even difficult to know preoperatively, if a lesion is benign or malignant. The differential diagnosis is only solved after microscopic and inmunohistochemical study. Leiomyoma next to this location (inguinal) could be diagnosed and confused with a nodule of the main FHM. Their immunophenotype allowed us to diagnose it not only as leiomyoma (myogenic markers were positive -non skeletal muscle-), but also to observe the infiltration by the FHM.


Assuntos
Neoplasias dos Genitais Masculinos/patologia , Histiocitoma/patologia , Canal Inguinal , Leiomioma/patologia , Neoplasias Primárias Múltiplas/patologia , Cordão Espermático , Idoso de 80 Anos ou mais , Neoplasias dos Genitais Masculinos/imunologia , Histiocitoma/imunologia , Humanos , Imunofenotipagem , Inflamação/patologia , Masculino , Invasividade Neoplásica , Neoplasias Primárias Múltiplas/imunologia
5.
Acta Cytol ; 48(4): 560-4, 2004.
Artigo em Inglês | MEDLINE | ID: mdl-15296347

RESUMO

BACKGROUND: Clear cell carcinoma of the gallbladder (CCG) is an unusual histologic variant recognized in the World Health Organ ization classification of tumors of the gallbladder and extrahepatic bile ducts. Although the clinicopathologic features have been documented in a few reports, to our knowledge the cytologic findings have not been described before. We report the fine needle aspiration cytology (FNAC) findings in a case of CCG with hepatic infiltration. CASE: A 72-year-old woman presented with right upper quadrant pain and hepatomegaly. Serum levels of CA19-9 and alpha-fetoprotein were elevated. Computed tomography revealed several hepatic nodules, the larger of which was a mass in contact with the gallbladder, which had a thickened wall. FNAC showed loose sheets and disassociated cells with abundant, clear, finely vacuolated cytoplasm. Atypical bare nuclei, binucleated cells and some multinucleated cells were also found. A simultaneous trucut biopsy from the main hepatic mass confirmed the diagnosis. CONCLUSION: CCG is a clear cell neoplasm that should be considered when clear changes are observed on FNAC. Recognition of the cytologic features, together with adequate clinicoradiologic study, may be sufficient to establish the diagnosis.


Assuntos
Adenocarcinoma de Células Claras/secundário , Biópsia por Agulha Fina , Neoplasias da Vesícula Biliar/patologia , Neoplasias Hepáticas/secundário , Fígado/patologia , Adenocarcinoma de Células Claras/sangue , Adenocarcinoma de Células Claras/terapia , Idoso , Biomarcadores Tumorais/análise , Antígeno CA-19-9/sangue , Carcinoma Hepatocelular/patologia , Quimioterapia Adjuvante , Terapia Combinada , Diagnóstico Diferencial , Feminino , Neoplasias da Vesícula Biliar/sangue , Neoplasias da Vesícula Biliar/terapia , Humanos , Imuno-Histoquímica , Neoplasias Hepáticas/sangue , Neoplasias Hepáticas/terapia , Invasividade Neoplásica , Tomografia Computadorizada por Raios X , alfa-Fetoproteínas/análise
6.
Acta Cytol ; 48(3): 420-4, 2004.
Artigo em Inglês | MEDLINE | ID: mdl-15192963

RESUMO

BACKGROUND: Although granulomas can occur in association with malignant neoplasms, including some subtypes of lymphoma, they have been described rarely in marginal zone B-cell lymphoma (MZCL). To our knowledge, the cytologic features of this association have not been documented. We present the cytologic findings with fine needle aspiration cytology (FNAC) of an unusual case of MZCL with concomitant granulomas. CASE: An 82-year-old male presented with a mass in the left parotid gland. The lesion was evaluated by FNAC. The smears showed syncytial aggregates of epithelioid histiocytes intermixed with small and medium-sized lymphoid cells containing round to irregular-shaped nuclei and small nucleoli. Some of these cells had a greater amount of cytoplasm and frequently had a plasmacytoid appearance. The lesion was removed, and histopathologic study showed MZCL associated with extensive nonnecrotizing granulomas. CONCLUSION: Granulomatous reactions can be seen in rare cases of MZCL. However, the cytologic features of the lymphoid infiltrate can suggest the possibility of MZCL in the clinical setting of FNAC performed from an extranodal location, such as the parotid gland.


Assuntos
Granuloma/patologia , Linfoma de Células B/patologia , Neoplasias Parotídeas/diagnóstico , Neoplasias Parotídeas/patologia , Idoso , Idoso de 80 Anos ou mais , Antígenos CD/metabolismo , Antígenos CD20/metabolismo , Biópsia por Agulha Fina , Diagnóstico Diferencial , Amarelo de Eosina-(YS) , Humanos , Imuno-Histoquímica , Masculino , Azul de Metileno
7.
Acta Cytol ; 48(2): 234-8, 2004.
Artigo em Inglês | MEDLINE | ID: mdl-15085759

RESUMO

BACKGROUND: Lymphoepithelioid cell lymphoma (LCL) is a rare morphologic variant of peripheral T-cell lymphoma. Although their histopathologic and immunohistochemical findings are well known, the cytopathologic features have not been well documented. This report describes the fine needle aspiration cytology (FNAC) findings of a case of LCL. CASE: A 75-year-old woman presented with cervical, supraclavicular, axillary and mediastinal lymphadenopathy. FNAC of a cervical lymph node was performed. The smears contained a polymorphous infiltrate formed by abundant histiocytes disposed singly or in clusters, small and medium-sized to large atypical lymphoid cells and reactive cells, including eosinophils and plasma cells. Isolated capillary-sized vessels also were observed. Histopathologic and immunohistochemical examination confirmed the diagnosis of Lennert's lymphoma. CONCLUSION: Although histopathologic and immunohistochemical studies were required for a definitive diagnosis, the findings of FNAC in this case appeared distinctive and suggested the possibility of LCL.


Assuntos
Linfonodos/patologia , Doenças Linfáticas/patologia , Linfoma de Células T/patologia , Idoso , Antígenos de Superfície/metabolismo , Biomarcadores Tumorais/metabolismo , Biópsia por Agulha Fina , Tamanho Celular/fisiologia , Epitopos de Linfócito T/imunologia , Feminino , Humanos , Doenças Linfáticas/etiologia , Linfócitos/imunologia , Linfócitos/patologia
8.
Rev. esp. patol ; 37(1): 91-98, ene. 2004. ilus, tab
Artigo em Es | IBECS | ID: ibc-30713

RESUMO

Se presenta un caso de proliferación nodular y difusa fibrosa de la túnica vaginal testicular en un varón de 28 años de edad con 3 años de evolución. La exploración física mostró una masa escrotal firme en el testículo izquierdo. En el acto quirúrgico se observó una cubierta endurecida, multinodular, en la túnica vaginal de dicho testículo. La impresión intraoperatoria fue la de un tumor de músculo liso benigno y la lesión fue extirpada. Macroscópicamente correspondía a una masa firme, multinodular y difusa de la túnica vaginal. Microscópicamente se correspondía con un pseudotumor fibroso formado por tejido conectivo denso hialinizado y fibroblastos con un pequeño número de agregados linfoides en la perifería de la lesión (AU)


Assuntos
Adulto , Masculino , Humanos , Testículo/citologia , Testículo/patologia , Fibrose Cística/diagnóstico , Fibrose Cística/patologia , Fibroblastos/patologia , Calcinose/diagnóstico , Calcinose/patologia , Neoplasias Testiculares/diagnóstico , Neoplasias Testiculares/patologia , Microscopia/métodos , Microscopia/instrumentação , Neoplasias Testiculares/diagnóstico , Neoplasias Testiculares/patologia
9.
Rev. esp. patol ; 36(2): 209-213, abr. 2003. ilus
Artigo em Es | IBECS | ID: ibc-26205

RESUMO

El tumor fibroso solitario (TFS) es un ejemplo de neoplasia poco frecuente que se adscribe a una localización concreta en un inicio, pero su típica imagen y patrón de expresión inmunohistoquímico están permitiendo describirlo en múltiples localizaciones. Dada su rareza y relativamente reciente descripción en su variante extrapleural, todavía no hay acuerdo en su comportamiento, ya que en algunas series no hay casos malignos, pero sí en otras. A los criterios más ampliamente reconocidos como definitorios de malignidad como la hipercelularidad, pleomorfismo, necrosis e índice mitótico > 4 mitosis/10CGA, se añaden otros criterios como la invasividad, tamaño, hemorragia, resecabilidad, positividad difusa del p53. Sin embargo, utilizando estos criterios su comportamiento todavía resulta imprevisible, ya que casos aparentemente benignos recidivan o metastatizan y la malignidad histológica según se define actualmente se asocia pero no predice un comportamiento agresivo en todos los casos. Por lo tanto, no hay acuerdo en la literatura ni se conoce con exactitud el pronóstico ni las características exactas que lo definen, por lo que es necesaria una mayor casuística. Describimos el caso de una mujer de 31 años con un TFS subcutáneo, de larga evolución y características histológicas convencionales de malignidad (AU)


Assuntos
Adulto , Feminino , Humanos , Neoplasias de Tecido Fibroso/patologia , Antígenos CD34/sangue , Genes p53 , Índice Mitótico , Neoplasias de Tecido Fibroso/cirurgia
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