RESUMEN
Objective: To investigate the proteins expression difference after upregulation of human CD99 in Hodgkin Lymphoma cell line, L428 cell, and verify the function of differential proteins. Methods: The differential proteins were detected by two-dimensional fluorescence difference gel electrophoresis and mass spectrometry analysis, cluster analysis was done by GOfact. Results: There were 38 proteins screened out, of which 21 proteins were positively associated with CD99, while 17 proteins were negative. Among the 38 proteins, 32 proteins participated in biological process, and 35 proteins were involved in the composition and construction. And 28 proteins participated in multifaceted biological activities including antioxidation, protein binding, catalytic activity, regulation of enzyme, signal transduction, molecular structure, regulation of translation and ion transport. Conclusions: The changes of the differential proteins, correlated with cytoskeleton, cell differentiation, signal pathway and regulating gene expression, are closely relevant to the translation between Hodgkin/Reed-Sternberg and B lymphocyte cell.
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Humanos , Antígeno 12E7 , Línea Celular Tumoral , Enfermedad de Hodgkin , Proteómica , Regulación hacia ArribaRESUMEN
Los ginandroblastomas son tumores del ovario extremadamente raros, los cuales comparten componentes de células de la granulosa y de células de Sertoli/Leydig. Se describe un caso de una niña de 12 años, quien presenta hemorragia uterina anormal y sensación de masa intraabdominal de crecimiento progresivo asociado a menorragia, niveles de CA-125 en 60,4 UI/mL y estudios de extensión que reportan masa quística en ovario izquierdo, manejada con ooforectomía. El estudio anatomopatológico muestra un tumor multiloculado lleno de material seroso, abundantes cuerpos de Call-Exner y 45% de células de Sertoli/Leydig. La inmunohistoquímica reveló inmunorreactividad para inhibina, calretinina y pCK, mientras que los marcadores CD99 y AE1/AE3 fueron negativos. Se trata del primer reporte de caso sobre un ginandroblastoma multiloculado, negativo para CD99 en una niña de 12 años, estudio que plantea un abordaje sistemático para los tumores de las células de los cordones sexuales.
The ginandroblastoma is an extremely rare ovarian tumor which shows components of granulosa cells and Sertoli/Leydig cells. We describe a case of a twelve-years-old girl who presented abnormal uterine bleeding and progressively growing intra- abdominal mass associated with menorrhagia, CA-125 60.4 UI/mL and extension studies reporting cystic mass in the left ovary. She underwent oophorectomy. Pathological study shows a multilocular tumor filled with serous material. Many Call-Exner bodies were observed in the histopathological analysis, 45% of Sertoli/Leydig cells. Immunohistochemistry was reactive for inhibin, calretinin and pCK while AE1/AE3 and CD99 markers were negative. This is the first case report about a multiloculated gynandroblastoma, negative for CD99 in a 12-years-old girl. Thus, the study of this clinical case represents a systematic approach for tumors of the sex cord cells.
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Humanos , Femenino , Niño , Neoplasias Ováricas/sangre , Biomarcadores de Tumor/sangre , Antígenos CD/sangre , Moléculas de Adhesión Celular/sangre , Tumores de los Cordones Sexuales y Estroma de las Gónadas/sangre , Neoplasias Ováricas/patología , Tumores de los Cordones Sexuales y Estroma de las Gónadas/patología , Antígeno 12E7RESUMEN
<p><b>OBJECTIVE</b>To investigate the expression of endothelium tight junction protein Claudin-5 and intercellular adhesion molecule CD99 in solid-pseudopapillary neoplasms (SPN) and neuroendocrine tumors of pancreas (P-NET), and their significance in the differential diagnoses.</p><p><b>METHODS</b>Immunohistochemical staining of Claudin-5 and CD99 was performed in 37 cases SPN and 21 cases of P-NET.</p><p><b>RESULTS</b>Membranous Claudin-5 expression was observed in all cases of SPN but was absent in all cases of P-NET. The difference was significant (P < 0.01). In SPN, 91.9% (34/37) of the cases displayed paranuclear dot-like immunoreactivity for CD99; in contrast, 61.9% (13/21) of the cases of P-NET displayed membranous staining (P < 0.01). There was a positive association between the expression of Claudin-5 and CD99 in SPN (r = 0.421,P = 0.001).</p><p><b>CONCLUSIONS</b>Although the macroscopic and microscopic features of SPN are quite characteristic, they may not allow confident differentiation from P-NET in all cases, especially when these characteristics are not classical. If necessary, immunostaining for Claudin-5 and CD99 can help to differentiate between these entities.</p>
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Adolescente , Adulto , Anciano , Niño , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven , Antígeno 12E7 , Antígenos CD , Metabolismo , Carcinoma Papilar , Metabolismo , Patología , Moléculas de Adhesión Celular , Metabolismo , Claudina-5 , Metabolismo , Diagnóstico Diferencial , Tumores Neuroendocrinos , Metabolismo , Patología , Neoplasias Pancreáticas , Metabolismo , Patología , Estudios Retrospectivos , Uniones Estrechas , MetabolismoRESUMEN
<p><b>OBJECTIVE</b>To compare the pathologic diagnosis and immunohistochemistry of small cell malignant tumors (SCMT) of bone using both core needle biopsy and surgical specimen.</p><p><b>METHODS</b>Seventy-seven cases of SCMT with core needle biopsies and surgical specimens available were respectively analyzed by histologic examination and immunohistochemical study, with literature review.</p><p><b>RESULTS</b>The male-to-female ratio was 48:29. The age of the patients ranged from 6 to 73 years. The tumors studied included Ewing sarcoma/PNET (n = 38), myeloma (n = 23), lymphoma (n = 10), small cell osteosarcoma (n = 2), small cell carcinoma (n = 2) and mesenchymal chondrosarcoma (n = 2). The tumors involved limbs, axial skeleton and flat bones. Microscopically, the tumors shared similar histology, with small round cells and spindly cells arranged in diffuse sheets. The pathologic diagnosis by core needle biopsies correlated with that by surgical specimens in 84.4% (65/77) of the cases.</p><p><b>CONCLUSIONS</b>SCMT represents a heterogeneous group of malignancy. Correlations with clinicoradiologic findings and application of ancillary investigations including immunohistochemistry and molecular study are important for definitive diagnosis. Pathologic diagnosis using core needle biopsies shows good results and provides useful information for surgical planning.</p>
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Adolescente , Adulto , Anciano , Niño , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven , Antígeno 12E7 , Antígenos CD , Metabolismo , Biopsia con Aguja Gruesa , Neoplasias Óseas , Diagnóstico , Metabolismo , Patología , Carcinoma de Células Pequeñas , Diagnóstico , Metabolismo , Patología , Moléculas de Adhesión Celular , Metabolismo , Linfoma , Diagnóstico , Metabolismo , Patología , Tumores Neuroectodérmicos Periféricos Primitivos , Diagnóstico , Metabolismo , Patología , Proteínas de Fusión Oncogénica , Metabolismo , Osteosarcoma , Diagnóstico , Metabolismo , Patología , Plasmacitoma , Diagnóstico , Metabolismo , Patología , Proteína Proto-Oncogénica c-fli-1 , Metabolismo , Proteína EWS de Unión a ARN , Metabolismo , Estudios Retrospectivos , Sarcoma de Ewing , Diagnóstico , Metabolismo , Patología , Vimentina , MetabolismoRESUMEN
We report a case of hemangiopericytoma of the soft palate of 60-year-old patient, who noticed a mass of the soft palate and experienced difficulty in speaking. We found a pediculate, hard, elastic mass measuring 38 mm (cross-sectional diameter). Computed tomography (CT) scans and dynamic magnetic resonance imaging (MRI) confirmed irregularly shaped mass and revealed a heterogeneous internal composition, consistent with vascular tumors. We excised the tumor under general anesthesia. Histopathological diagnosis was based on positive immunoreactivity of CD99 and vimentin and weak, positive staining of CD34. Three and half years following tumor excision, there is no recurrence or metastasis.
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Humanos , Masculino , Persona de Mediana Edad , Antígeno 12E7 , Antígenos CD , Antígenos CD34 , Trastornos de la Articulación , Moléculas de Adhesión Celular , Trastornos de Deglución , Estudios de Seguimiento , Hemangiopericitoma , Imagen por Resonancia Magnética , Neoplasias Palatinas , Paladar Blando , Patología , Tomografía Computarizada por Rayos X , VimentinaRESUMEN
<p><b>OBJECTIVE</b>To explore the effect of CD99 overexpression on the morphology and differentiation-related phenotypes of classical Hodgkin's lymphoma cell line L428 and investigate the role of CD99 gene in Hodgkin/Reed-Sternberg (HRS) cell generation and transformation.</p><p><b>METHODS</b>The effect of CD99 overexpression on the cell morphology was detected by HE staining and phalloidin staining. Differentiation-related protein expressions were detected by immunocytochemistry and flow cytometry after stable transfection of CD99 gene in L428 cells.</p><p><b>RESULTS</b>CD99 overexpression caused a decrease of the cell size and reorganization of the actin cytoskeleton in L428 cells. Upregulation of CD99 led to the loss of classical Hodgkin's lymphoma diagnosis marker CD30 and CD15 and the restoration of the B-cell makers of PAX5, CD19, CD79α, BCL-6, and CD10.</p><p><b>CONCLUSION</b>CD99 overexpression leads to redifferentiation of L428 cells towards B cells, suggesting that the loss of B-cell phenotype in classical Hodgkin's lymphoma is very likely a result of down-regulated CD99 expression.</p>
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Humanos , Antígeno 12E7 , Antígenos CD , Genética , Linfocitos B , Biología Celular , Moléculas de Adhesión Celular , Genética , Diferenciación Celular , Línea Celular Tumoral , Regulación Neoplásica de la Expresión Génica , Enfermedad de Hodgkin , Genética , PatologíaRESUMEN
<p><b>OBJECTIVE</b>To investigate the clinical and pathological features, differential diagnosis of granulocytic sarcoma.</p><p><b>METHODS</b>The clinical manifestations, histopathological features, immunohistochemistry, treatment and prognosis were analyzed retrospectively in 10 cases of granulocytic sarcoma.</p><p><b>RESULTS</b>The age of patients ranged from 10 to 56 years (means = 35.8 years). The male-to-female ratio was 1.5:1. Histologically, the malignant cells of granulocytic sarcoma grew in a diffuse pattern. The cytoplasm was scanty, with eosinophilic fine granularity in some cells. The nuclei were round or focally irregular, and had finely dispersed chromatin. The mitotic figures were visible. Immunohistochemical stains for MPO, CD43, CD117, CD34 and CD99 were positive.</p><p><b>CONCLUSIONS</b>Granulocytic sarcoma can occur in patients of all ages with a male predominance. The diagnosis of granulocytic sarcoma is assisted by the cytochemical stain for naphthol-ASD-chloroacetate esterase and/or immunophenotypic analyses for MPO, CD43, CD117, CD34, CD99. These stains aid in the distinction of granulocytic sarcoma from: lymphoblastic lymphoma, Burkitt lymphoma, diffuse large B-cell lymphoma, small round cell tumours, particularly in children, and blastic plasmacytoid dendritic cell neoplasm.</p>
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Adolescente , Adulto , Niño , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven , Antígeno 12E7 , Antígenos CD , Metabolismo , Antígenos CD34 , Metabolismo , Linfoma de Burkitt , Metabolismo , Patología , Moléculas de Adhesión Celular , Metabolismo , Células Dendríticas , Metabolismo , Patología , Diagnóstico Diferencial , Estudios de Seguimiento , Inmunohistoquímica , Leucosialina , Metabolismo , Linfoma de Células B Grandes Difuso , Metabolismo , Patología , Peroxidasa , Metabolismo , Leucemia-Linfoma Linfoblástico de Células Precursoras , Metabolismo , Patología , Proteínas Proto-Oncogénicas c-kit , Metabolismo , Estudios Retrospectivos , Sarcoma Mieloide , Metabolismo , Patología , Neoplasias Cutáneas , Metabolismo , PatologíaRESUMEN
<p><b>OBJECTIVE</b>To investigate co-expression of CD99/MIC2 and anaplastic lymphoma kinase (ALK) protein in anaplastic large-cell lymphoma (ALCL) tissues and Karpas 299 cells and its significance.</p><p><b>METHODS</b>Clinical prognoses and ALK protein expressions of 25 cases of ALCL were reviewed retrospectively, the median duration of survival was analyzed for patients with ALK(+) ALCL and ALK(-) ALCL. Histological and immunohistochemical staining were applied to other 25 cases of ALCL and paraffin-embedded tissue from human anaplastic large-cell lymphoma Karpas 299 cells to detect the protein of CD99 and ALK.</p><p><b>RESULTS</b>Of former 25 cases of ALCL, median duration of survival for ALK(+) patients was 59 months, whereas 20 months for ALK(-) patients. The prognosis of ALK(+) group was better than that of ALK(-) group, survival curves of these two groups showed statistically significant (P < 0.05). CD99 was positive in 18 cases (72.0%) while negative in 7 cases (28.0%) of the latter 25 ALCL, ALK was positive in 19 cases (76.0%) while negative in 6 cases (24.0%); Of 19 ALK(+) ALCL, 16 (84.2%) cases co-expressed CD99-ALK; and in 6 ALK(-) ALCL, 2(33.3%) were CD99-ALK double negative, the expression of CD99 protein strongly correlated with that of ALK protein (P < 0.05). ALK and CD99 protein expressed in Karpas 299 cells with diffuse distribution.</p><p><b>CONCLUSIONS</b>CD99 highly expressed in ALCL, and showed high rate of co-expression with ALK. CD99 protein expression could be considered as a helpful diagnostic and prognostic factor of ALCL, especially for ALK(+) ALCL.</p>
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Adolescente , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven , Antígeno 12E7 , Antígenos CD , Metabolismo , Moléculas de Adhesión Celular , Metabolismo , Línea Celular Tumoral , Linfoma Anaplásico de Células Grandes , Diagnóstico , Metabolismo , Pronóstico , Proteínas Tirosina Quinasas Receptoras , Metabolismo , Estudios RetrospectivosRESUMEN
<p><b>OBJECTIVE</b>To study the clinicopathologic features of primitive neuroectodermal tumor (PNET) in female genital tract.</p><p><b>METHODS</b>Six cases of PNET arising in female genital tract were retrospectively reviewed. The clinicopathologic features, immunohistochemical findings and EWS gene translocation study results were analyzed.</p><p><b>RESULTS</b>The age of patients ranged from 10 to 27 years (mean = 20 years). The sites of involvement included ovary (1 case), uterus (1 case), vulva (2 cases) and vagina (2 cases). The greatest diameter of the tumor ranged from 2 to 10 cm (mean = 5.4 cm). The tumor had nodular appearance and showed grayish-pink fleshy cut surface, accompanied by foci of hemorrhage and necrosis. Histologically, the tumor was composed of malignant small round cells with indistinct cell borders, hyperchromatic nuclei, dense chromatin, tiny nucleoli and scanty cytoplasm. The tumor cells were arranged in sheets or lobules. Homer-Wright rosettes were identified in 1 case. Immunohistochemical study showed that the tumor cells were positive for CD99, FLI-1 and CD56 (6/6). Focal expression of vimentin (5/6), NSE (5/6), nestin (4/6), synaptophysin (4/6), S-100 protein (2/6) and chromogranin A (1/6) was also demonstrated. EWS gene translocation was detected in 5 cases studied. Follow-up information was available in 2 patients (7 and 17 months of follow up, respectively). One of them died of tumor metastasis 17 months after diagnosis. The other patient was still alive.</p><p><b>CONCLUSIONS</b>PNET arising in female genital tract is rare. It mainly involves ovary, uterus, vulva and vagina. Immunohistochemical study using a panel of antibodies and fluorescence in-situ hybridization play an important role in definitive diagnosis of this rare malignancy.</p>
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Adolescente , Adulto , Niño , Femenino , Humanos , Adulto Joven , Antígeno 12E7 , Antígenos CD , Metabolismo , Antígeno CD56 , Metabolismo , Moléculas de Adhesión Celular , Metabolismo , Estudios de Seguimiento , Neoplasias de los Genitales Femeninos , Genética , Metabolismo , Patología , Cirugía General , Tumores Neuroectodérmicos Periféricos Primitivos , Genética , Metabolismo , Patología , Cirugía General , Neoplasias Ováricas , Genética , Metabolismo , Patología , Cirugía General , Proteína Proto-Oncogénica c-fli-1 , Metabolismo , Proteína EWS de Unión a ARN , Genética , Estudios Retrospectivos , Translocación Genética , Neoplasias Uterinas , Genética , Metabolismo , Patología , Cirugía General , Neoplasias Vaginales , Genética , Metabolismo , Patología , Cirugía General , Vimentina , Metabolismo , Neoplasias de la Vulva , Genética , Metabolismo , Patología , Cirugía GeneralRESUMEN
<p><b>OBJECTIVE</b>To study the clinical manifestations, radiologic findings, pathologic diagnosis and differential diagnosis of primary osteosarcoma in elderly patients.</p><p><b>METHODS</b>Twelve cases of primary osteosarcoma occurring in patients older than 60 years were encountered during the period from 1985 to 2010. The clinical manifestations, radiologic features and pathologic findings were studied and the follow-up data were analyzed.</p><p><b>RESULTS</b>The sites of involvement included long bones (number = 7), ilium (number = 1), craniofacial bones (number = 2) and soft tissue (number = 2). Radiologic examination showed a mixture of osteosclerotic and osteolytic lesions in 10 patients, soft tissue lesions with high-density areas in 2 patients and soft tissue lesions with periosteal reaction in 8 patients. Histologically, most cases showed features of conventional osteosarcoma. There were 2 cases of malignant fibrous histiocytoma-like osteosarcoma, 2 cases of chondroblastic osteosarcoma and 1 case of well-differentiated intraosseous osteosarcoma. Immunohistochemical study played little role in pathologic diagnosis. Ten patients had undergone amputation, including one patient who had received adjuvant chemotherapy beforehand. Nine patients had follow-up information available. Three of them died of lung metastasis and 1 died of cardiovascular disease.</p><p><b>CONCLUSIONS</b>Primary osteosarcoma rarely occurs in elderly patients and can easily be missed. Correlation with clinical, radiologic and histologic features is important for arriving at a correct diagnosis.</p>
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Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Antígeno 12E7 , Antígenos CD , Metabolismo , Neoplasias Óseas , Diagnóstico por Imagen , Metabolismo , Patología , Cirugía General , Moléculas de Adhesión Celular , Metabolismo , Condrosarcoma , Patología , Diagnóstico Diferencial , Neoplasias Femorales , Diagnóstico por Imagen , Metabolismo , Patología , Cirugía General , Estudios de Seguimiento , Ilion , Neoplasias Pulmonares , Linfoma , Patología , Osteítis Deformante , Patología , Osteosarcoma , Diagnóstico por Imagen , Metabolismo , Patología , Cirugía General , Radiografía , Neoplasias de los Tejidos Blandos , Diagnóstico por Imagen , Metabolismo , Patología , Cirugía General , Vimentina , MetabolismoRESUMEN
<p><b>OBJECTIVE</b>To study the clinicopathologic and immunohistochemical features of mesenchymal chondrosarcoma.</p><p><b>METHODS</b>The clinical and histologic features of 23 cases of mesenchymal chondrosarcoma were analyzed. Immunohistochemical study was also performed in 14 of the cases.</p><p><b>RESULTS</b>The age of patients ranged from 12 to 47 years. Fourteen of them occurred in males. Thirteen cases involved the bony skeleton and 5 cases affected the soft tissue. The patients presented with pain and/or swelling. Histologically, the tumor consisted of a mixture of undifferentiated small round cells and hyaline cartilage. Transition between the two components was demonstrated and growth plate-like cartilage was observed. Immunohistochemical study showed that the small round cells were positive for Sox9 (14/14), CD99 (12/14), vimentin (6/14), CD56 (4/14), CD57 (4/14), neuron-specific enolase (3/14) and desmin(1/14). They were negative for Coll-II, S-100 protein, epithelial membrane antigen, pan-cytokeratin, synaptophysin, chromogranin A, CD34 and c-erbB2.</p><p><b>CONCLUSIONS</b>Mesenchymal chondrosarcoma is a rare malignant tumor. Thorough histologic examination, when coupled with immunohistochemical findings, is helpful in arriving at a correct diagnosis.</p>
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Adolescente , Adulto , Niño , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven , Antígeno 12E7 , Antígenos CD , Metabolismo , Neoplasias Óseas , Diagnóstico por Imagen , Metabolismo , Patología , Cirugía General , Moléculas de Adhesión Celular , Metabolismo , Condrosarcoma Mesenquimal , Diagnóstico por Imagen , Metabolismo , Patología , Cirugía General , Estudios de Seguimiento , Inmunohistoquímica , Neoplasias Pulmonares , Neoplasias del Mediastino , Diagnóstico por Imagen , Metabolismo , Patología , Cirugía General , Recurrencia Local de Neoplasia , Neoplasias Orbitales , Diagnóstico por Imagen , Metabolismo , Patología , Cirugía General , Radiografía , Factor de Transcripción SOX9 , Metabolismo , Vimentina , MetabolismoRESUMEN
<p><b>OBJECTIVE</b>To investigate the imaging features, clinical manifestations and pathological characteristics of solitary fibrous tumors (SFT).</p><p><b>METHODS</b>The clinicopathological manifestations and medical imaging findings were analyzed retrospectively in 27 patients with surgically confirmed SFT.</p><p><b>RESULTS</b>The SFTs originated from different parts of the body, including 18 in the chest, 4 in the abdomen, 1 in the lumboscral area, 3 in the pelvis, and 1 in the left shoulder. Twenty-three cases were found by CT scan, among which there were 16 benign diseases, presented with well-defined round or elliptic margins, with homogeneous attenuation and clearly surrounding; 6 malignant cases with unclear demarcations, invasive surrounding, heterogeneous attenuation due to calcification and/or irregular necrosis, and 1 junctional case with well-defined margins, which was enlarged during follow-up. There were 4 SFTs scanned by MRI with clear margin and homogeneous or heterogeneous signal intensity. All of the 4 cases were isointense or hyperintense to muscle on T1-weighted images, and were hyperintense on the T2-weighted images. All tumors showed heterogeneously intense enhancement with geographic pattern. Immunohistochemical staining showed that CD34-positive was 81.5%, vimentin (100.0%), CD99 (100.0%) and bcl-2 (96.3%), as well as negative CK (100.0%) and S-100 (96.3%).</p><p><b>CONCLUSION</b>The location of SFT is varying. Though its clinical manifestations vary, the diagnosis is depended on pathology and immunohistochemistry. There are certain specific features related to SFTs on CT or MRI. These imaging techniques may serve to provide helpful information as to the location and vicinal anatomic structure of the tumor, which is of substantial importance for planning surgery.</p>
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Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven , Antígeno 12E7 , Neoplasias Abdominales , Diagnóstico , Metabolismo , Patología , Cirugía General , Antígenos CD , Metabolismo , Antígenos CD34 , Metabolismo , Moléculas de Adhesión Celular , Metabolismo , Imagen por Resonancia Magnética , Neoplasias Pélvicas , Diagnóstico , Metabolismo , Patología , Cirugía General , Estudios Retrospectivos , Tumor Fibroso Solitario Pleural , Diagnóstico , Metabolismo , Patología , Cirugía General , Tumores Fibrosos Solitarios , Diagnóstico , Metabolismo , Patología , Cirugía General , Tomografía Computarizada Espiral , Vimentina , MetabolismoRESUMEN
<p><b>OBJECTIVE</b>To observe the expression of FLI-1 in primitive neuroectodermal tumors (PNET), explore the value of immunohistochemical staining of FLI-1 in combination with other neural markers in diagnosis of PNET, and analyze the prognostic factors in PNET patients.</p><p><b>METHODS</b>35 cases of PNET, of which 33 cases with complete clinical data, were included in this study. Immmunohistochemistry (The En Vision method) was applied to detect the expression of FLI-1, CD99, Syn, NSE, S-100, NF, Vim in the tumor tissues. The clinicopathological data of 33 cases were analyzed by Cox regression.</p><p><b>RESULTS</b>The positive expression rate of FLI-1 were 51.4% and that of CD99 was 88.6%. The sensitivity of FLI-1 combined with CD99 was up to 100%. The positive rates of Vim, Syn, NSE, s-100 and NF were 91.4%, 48.6%, 45.7%, 22.9% and 0, respectively. Cox regression analysis showed that the impact of primary location and treatment modality were of statistical significance (P < 0.05), but the age, sex, stage or size of tumors did not (P > 0.05).</p><p><b>CONCLUSION</b>Immunohistochemical detection of FLI-1 and neural markers is a preferred method for clinical diagnosis of PNET. The main factors affecting the prognosis are the primary location of PNET and treatment modality.</p>
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Adolescente , Adulto , Niño , Preescolar , Femenino , Humanos , Lactante , Masculino , Persona de Mediana Edad , Adulto Joven , Antígeno 12E7 , Antígenos CD , Metabolismo , Neoplasias Encefálicas , Metabolismo , Patología , Terapéutica , Moléculas de Adhesión Celular , Metabolismo , Terapia Combinada , Estudios de Seguimiento , Tumores Neuroectodérmicos Primitivos , Metabolismo , Patología , Terapéutica , Tumores Neuroectodérmicos Periféricos Primitivos , Metabolismo , Patología , Terapéutica , Neoplasias Pélvicas , Metabolismo , Patología , Terapéutica , Fosfopiruvato Hidratasa , Metabolismo , Modelos de Riesgos Proporcionales , Proteína Proto-Oncogénica c-fli-1 , Metabolismo , Proteínas S100 , Metabolismo , Tasa de Supervivencia , Sinaptofisina , Metabolismo , Vimentina , MetabolismoRESUMEN
<p><b>OBJECTIVE</b>To study the clinicopathologic features, diagnostic criteria and prognostic parameters of juvenile granulosa cell tumor of ovary.</p><p><b>METHODS</b>The clinical and pathologic findings of 7 cases of juvenile granulosa cell tumor were retrospectively reviewed. Immunohistochemical study was carried out in 6 of these cases. The follow-up data were also analyzed.</p><p><b>RESULTS</b>The mean age of the patients was 24 years (range=6 to 53 years). Four patients presented with hormonal disturbance, while 3 patients presented with abdominal pain or swelling. Six patients underwent unilateral salpingo-oophorectomy. Six cases were in stage IA and the remaining case in stage IC. Follow-up information was available in 6 patients and the duration of follow up ranged from 1 to 10 years (mean=4.3 years). Five patients remained healthy, with no evidence of tumor recurrence. One patient died of tumor metastasis one year after the diagnosis. Gross examination showed that the tumor masses ranged from 7 to 20 cm in the greatest dimension (average=13.4 cm). Four of the 7 tumors were mixed solid-cystic in appearance and 2 cases were unilocular cystic in nature. Microscopic examination showed diffuse atypical follicular structures formed by granulosa cells. The granulosa cells contained round hyperchromatic nuclei, without nuclear grooves or Call-Exner body formation (6/7). In one of the cases studied, minor foci resembling adult granulosa cell tumor were also demonstrated. The degree of cellular atypia varied (3 cases with severe atypia, 1 case with moderate atypia and 3 cases with mild atypia). The mitotic count ranged from 1 to more than 5 per 10 high-power fields. Immunohistochemical study showed diffuse positivity for vimentin (6/6). The staining for cytokeratin (AE1/AE3) and calretinin was negative. Four cases expressed CD99 and 1 case was positive for inhibin.</p><p><b>CONCLUSIONS</b>Juvenile granulosa cell tumor is characterized by the presence of diffuse atypical follicular structures formed by small round cells, without nuclear grooves or Call-Exner bodies. Rare cases contain minor foci of adult granulosa cell tumor. They can be unilocular cystic in nature. The degree of nuclear atypia, mitotic activity and size of the tumor vary and do not correlate with the risk of recurrence and aggressive biologic behavior.</p>
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Adolescente , Adulto , Niño , Femenino , Humanos , Persona de Mediana Edad , Antígeno 12E7 , Neoplasias Abdominales , Antígenos CD , Metabolismo , Moléculas de Adhesión Celular , Metabolismo , Estudios de Seguimiento , Tumor de Células de la Granulosa , Metabolismo , Patología , Cirugía General , Inhibinas , Metabolismo , Neoplasias Ováricas , Metabolismo , Patología , Cirugía General , Ovariectomía , Métodos , Pronóstico , Estudios Retrospectivos , Vimentina , MetabolismoRESUMEN
<p><b>BACKGROUND AND OBJECTIVE</b>Extraskeletal Ewing's sarcoma (EES) is a rare, rapidly growing, round-cell, malignant tumor that can develop in the soft tissues at any location. This study was to analyze the clinical features, diagnosis and treatment of EES.</p><p><b>METHODS</b>Clinical data of 18 patients with EES, treated at between Cancer Center of Sun Yat-sen University between 1995 and 2007, were analyzed.</p><p><b>RESULTS</b>Of the 18 patients, 13 were male and 8 were female, aged from 8 months to 60 years. Twelve (66.7%) patients were between 5-25 years of age. Eight (44.4%) patients had tumors originated from low extremities.Sixteen patients had masses at their first visit. Sixteen patients were treated by the combined modality therapy, and 2 patients were treated by the single modality therapy. The 1-, 3- and 5- year actuarial survival rates were 82.4%, 64.2% and 32.1%, respectively. The presence of metastatic disease at the time of diagnosis and the mode of treatment were prognostic factors.</p><p><b>CONCLUSIONS</b>EES is common in adolescent. It often manifests as a localized mass. The combined modality therapy is recommended for this disease. The presence of metastatic disease at the time of diagnosis and the mode of treatment are prognostic factors.</p>
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Adolescente , Adulto , Niño , Preescolar , Femenino , Humanos , Lactante , Masculino , Persona de Mediana Edad , Adulto Joven , Antígeno 12E7 , Antígenos CD , Metabolismo , Protocolos de Quimioterapia Combinada Antineoplásica , Usos Terapéuticos , Neoplasias Óseas , Moléculas de Adhesión Celular , Metabolismo , Terapia Combinada , Extremidad Inferior , Neoplasias Pulmonares , Recurrencia Local de Neoplasia , Neoplasia Residual , Radioterapia de Alta Energía , Sarcoma de Ewing , Diagnóstico , Metabolismo , Patología , Cirugía General , Terapéutica , Neoplasias de los Tejidos Blandos , Diagnóstico , Metabolismo , Patología , Cirugía General , Terapéutica , Tasa de Supervivencia , Vimentina , MetabolismoRESUMEN
<p><b>BACKGROUND AND OBJECTIVE</b>Primary renal synovial sarcoma is rare and might be misdiagnosed as another renal tumor. This study demonstrates the clinicopathologic and immunohistochemical features, differential diagnosis, and prognosis of such tumors.</p><p><b>METHODS</b>Histologic slides and clinical data were reviewed for 4 patients with primary renal synovial sarcoma and immunohistochemical staining was performed. Molecular analysis was performed on 2 cases to demonstrate the presence of the SYT-SSX gene fusion transcripts by reverse transcriptase polymerase chain reaction (RT-PCR).</p><p><b>RESULTS</b>The patients were 2 women and 2 men aged from 32 to 48 years. The tumors were 10.0-15.0 cm in diameter, grey-white and solid, and hemorrhage or necrosis was observed. Microscopically, the tumors consisted of mitotically active, monomorphic plump spindle cells with indistinct cell borders growing in short, intersecting fascicles. Hypocellular myxoid areas and a prominent hemangiopericytomatous pattern were present in all cases. The average mitotic rate was 5-8 mitoses/10 high-power fields. Hemorrhage and tumor necrosis were easily found. Scattered small cysts lined with flat, cuboidal, or hobnailed epithelia were found in 3 cases. Tumor cells are immunoreactive for Vimentin (4/4), Bcl-2 (4/4), CD99 (4/4), and CD56 (3/4), and focally for EMA (3/4) and Cytokeratin (3/4). SYT-SSX1 gene fusion was detected in the 2 cases in which RT-PCR analysis was performed. One patient had tumor metastasis to the lung 6 months after surgery and died 5 months later. Multiple metastasis to the liver occurred in one patient and the patient died 13 months after the initial surgery. The other 2 patients had tumors recur at 8 and 15 months and died at 18 and 21 months, respectively, after the initial operation.</p><p><b>CONCLUSION</b>Primary renal synovial sarcoma is rare, with poor prognosis, characterized by SYT-SSX gene fusion, and needs to be differentiated from other renal sarcomas.</p>
Asunto(s)
Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Antígeno 12E7 , Antígenos CD , Metabolismo , Antígeno CD56 , Metabolismo , Moléculas de Adhesión Celular , Metabolismo , Estudios de Seguimiento , Queratinas , Metabolismo , Neoplasias Renales , Metabolismo , Patología , Cirugía General , Neoplasias Hepáticas , Neoplasias Pulmonares , Mucina-1 , Metabolismo , Recurrencia Local de Neoplasia , Nefrectomía , Proteínas de Fusión Oncogénica , Metabolismo , Proteínas Proto-Oncogénicas c-bcl-2 , Metabolismo , Sarcoma Sinovial , Metabolismo , Patología , Cirugía General , Tasa de Supervivencia , Vimentina , MetabolismoRESUMEN
<p><b>OBJECTIVE</b>To study the clinicopathologic characteristics, immunophenotype and differential diagnosis of superficial acral fibromyxoma (SAF).</p><p><b>METHODS</b>The clinical, pathologic and immunohistochemical features of a case of SAF occurring in left middle finger was studied, with review of literature.</p><p><b>RESULTS</b>The patient was a 62-year-old male who presented with a solitary painful nodule located in the distal aspect of his left middle finger. The nodule lied close to the nail bed and deep to the underlying periosteum. Grossly, the tumor was poorly circumscribed, measured 2 cm in greatest dimension and had a greyish-white cut surface and rubbery consistency. On low-power examination, the tumor was centred in the dermis and displayed a vague lobular pattern. The tumor cells were spindled to stellate in shape and associated with myxoid matrix. Focal fascicular or loose storiform patterns were also noted. A delicate vascular network was identified in the myxoid stroma. Mast cells were readily observed. On high-power examination, the tumor cells were relatively bland-looking and showed at most a mild degree of nuclear atypia. Mitotic figures were rare and coagulative tumor necrosis was absent. Immunohistochemical study showed that the tumor cells were positive for vimentin, CD34 and CD99. Focal staining for CD10 was also demonstrated. Other immunomarkers including actins, desmin and epithelial membrane antigen were negative.</p><p><b>CONCLUSIONS</b>SAF is a distinctive soft tissue tumor occurring mainly in the digits of adults. Awareness of this entity is helpful in distinguishing SAF from other myxoid soft tissue tumors occurring there. Complete excision with clear resection margins is the mainstay of treatment.</p>
Asunto(s)
Humanos , Masculino , Persona de Mediana Edad , Antígeno 12E7 , Antígenos CD , Metabolismo , Antígenos CD34 , Metabolismo , Moléculas de Adhesión Celular , Metabolismo , Dermatofibrosarcoma , Metabolismo , Patología , Diagnóstico Diferencial , Fibroma , Diagnóstico por Imagen , Metabolismo , Patología , Cirugía General , Dedos , Patología , Estudios de Seguimiento , Ganglión , Metabolismo , Patología , Neoplasias de la Vaina del Nervio , Metabolismo , Patología , Radiografía , Neoplasias Cutáneas , Metabolismo , Patología , Neoplasias de los Tejidos Blandos , Diagnóstico por Imagen , Metabolismo , Patología , Cirugía General , Vimentina , MetabolismoRESUMEN
<p><b>OBJECTIVE</b>To study the clinicopathologic features, immunohistochemical findings and prognosis of precursor lymphoblastic lymphoma/acute lymphoblastic leukemia (LBL/ALL).</p><p><b>METHODS</b>One hundred and fifty-three cases of LBL/ALL were retrospectively analyzed. Immunohistochemical study was carried out. The pathologic findings were correlated with Ann Arbor tumor stage, Ki-67 index, other clinical parameters (including mediastinum/bone marrow involvement, hepato-splenomegaly, age and gender of the patients) and the survival data.</p><p><b>RESULTS</b>Staining for TdT and CD99 was positive in 79.1% (121/153 cases) and 96.3% (131/136 cases), respectively. The cases were categorized into three groups according to the immunohistochemical findings, as follows: precursor T-cell, precursor B-cell and undefined. T-LBL/ALL accounted for 69.3% (106/153 cases) of all of the cases. The male-to-female ratio was 2.4:1 (including 75 males and 31 females). The median age at diagnosis was 17.5 years (ranged from 2 years to 68 years). Ninety-two patients (86.8%) presented with peripheral lymphadenopathy and 59 of them (55.7%) had mediastinal masses. Ninety-one cases (85.8%) were in stage III or IV at diagnosis. The 1-year and 5-year survival rates in patients with T-LBL/ALL were 36.1% and 8.1%, respectively. Patients older than 25 years and those presented in stage III or IV suggested a poor prognosis (P = 0.049 and 0.001, respectively). On the other hand, 29 of the 153 cases (19.0%) belonged to B-LBL/ALL. The median age of the patients was 14 years (ranged from 9 months to 75 years). The male-to-female ratio was 1.6:1 (including 18 males and 11 females). Seventeen patients (58.6%) presented with peripheral lymphadenopathy and 13 of them (44.8%) had involvement of bone marrow or peripheral blood. Mediastinal involvement was found only in 5 cases (17.2%). Twenty-one patients (72.4%) were in stage III or IV at diagnosis. The 1-year and 5-year survival rates were 53.3% and 36.7%, respectively. The remaining 11.7% cases (18/153 cases) were categorized as undefined type, with a negative staining for the following immuno-markers including: CD3ε/CD3, CD45RO, CD79a, CD20, MPO, CD5, CD56, cyclin D1, cytokeratin, neuron-specific enolase, chromogranin A and synaptophysin. The median age of the patients was 15.5 years (ranged from 4 to 53 years). The male-to-female ratio was 2.6:1 (including 13 males and 5 females). The percentage of T-LBL/ALL patients with mediastinal masses were significantly higher than that of B-LBL/ALL cases (P = 0.0003). There was no significant difference in prognostic parameters of T-LBL/ALL and B-LBL/ALL (P = 0.07). The difference in median survival time however was statistically significant (6.0 months +/- 1.1 months versus 15.0 months +/- 7.0 months).</p><p><b>CONCLUSIONS</b>Both TdT and CD99 are useful markers for the diagnosis of precursor lymphoblastic malignancy. T-LBL/ALL predominantly affects children or adolescent males and frequently presents with lymphadenopathy and mediastinal masses, whereas B-LBL/ALL are often accompanied by bone marrow and peripheral blood involvement. In general, T-LBL/ALL carries a poor prognosis. The prognostic criteria include age of older than 25 years and a classification of stage III or IV disease.</p>
Asunto(s)
Adolescente , Adulto , Anciano , Niño , Preescolar , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven , Antígeno 12E7 , Factores de Edad , Antígenos CD , Metabolismo , Médula Ósea , Patología , Moléculas de Adhesión Celular , Metabolismo , ADN Nucleotidilexotransferasa , Metabolismo , Inmunofenotipificación , Estadificación de Neoplasias , Leucemia-Linfoma Linfoblástico de Células Precursoras , Metabolismo , Patología , Leucemia-Linfoma Linfoblástico de Células T Precursoras , Metabolismo , Patología , Pronóstico , Estudios Retrospectivos , Tasa de SupervivenciaRESUMEN
<p><b>OBJECTIVE</b>To construct a recombinant lentivirus harboring RNA interference sequence targeting mouse CD99 antigen-like 2 (mCD99L2) gene and observe its infection efficiency of 293FT cells.</p><p><b>METHODS</b>Four pairs of small interfering RNAs (siRNAs) targeting mCD99L2 cDNA were designed, synthesized and linked to the lentivirus vector SD1259 to construct the lentivirus shuttle plasmids. After sequencing, the 4 lentivirus shuttle plasmids were transfected into 293FT cells in the presence of packaging plasmids. Forty-eight hours later, the supernatant was collected and the titer and infection efficiency of the recombinant lentivirus were determined according to the expression of the reporter gene enhanced green fluorescent protein (EGFP) under fluorescent microscope.</p><p><b>RESULTS</b>DNA sequencing demonstrated that mCD99L2 siRNAs were successfully cloned to the lentiviral vector SD1259. The titer of concentrated virus was 1x10(7)/ml in the supernatant of the infected cells.</p><p><b>CONCLUSION</b>The recombinant lentivirus containing siRNA targeting mCD99L2 gene has been successfully constructed, which provide the basis for future establishment of visualized cell model and animal model of Hodgkin's lymphoma.</p>
Asunto(s)
Animales , Ratones , Antígeno 12E7 , Antígenos CD , Genética , Secuencia de Bases , ADN Complementario , Genética , Vectores Genéticos , Proteínas Fluorescentes Verdes , Genética , Metabolismo , Enfermedad de Hodgkin , Patología , Lentivirus , Genética , Metabolismo , Datos de Secuencia Molecular , Interferencia de ARN , ARN Interferente Pequeño , Genética , Proteínas Recombinantes , Genética , Células Tumorales CultivadasRESUMEN
<p><b>OBJECTIVE</b>To construct a eukaryotic expression vector of CD99 gene for transfection into Hodgkin lymphoma L428 cells.</p><p><b>METHODS</b>The full-length cDNA of CD99 gene was amplified from Jurkat cells by RT-PCR and cloned into the pcDNA3.1(+) vector and transfected into L428 cell line using Lipofextamine 2000. The sequence of CD99 mRNA in the transfected cells was confirmed by restriction endonuclease digestion and DNA sequencing, and the expression of CD99 protein was identified using immunocytochemistry.</p><p><b>RESULTS</b>A gene fragment of 558 bp was amplified from the transfected cells and the sequence was verified by DNA sequencing. Immunocytochemistry identified the presence of CD99 expression in the transfected cells.</p><p><b>CONCLUSION</b>A eukaryotic expression vector pcDNA3.1(+)-CD99 is successfully constructed and stably expressed in L428 cell line.</p>