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tissues With transdifferentiation in the newt a lens can be regenerated from the dedifferentiation of iris pigmented epithelium or cartilage from dedifferentiated limb muscle tissue Transdifferentiation occurs in the culture of embryonic chick retina under certain culture conditions where the pigment disappears and lens specific proteins are made In jellyfish cell

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regions were seen Fig 5 These areas exhibited variable histological patterns ranging from low grade to high grade myxofibrosarcoma and malignant fibrous histiocytoma MFH Fig 6 The tumor was positive for CD99 but negative for desmin and CD34 A Ki67 stain demonstrated considerable proliferative activity Fig 7 Diagnosis Dedifferentiated Liposarcoma

standard high Figure 2 Dedifferentiated chondrosarcoma well differentiated components show conventional chondrosarcoma composed of atypical chondrocytes with hyaline cartilage matrix left and with myxoid matrix

liposarcoma dedifferentiated liposarcoma

FINAL DIAGNOSIS

a The primary tumor of case 1 showed an abrupt transition between the components of well differentiated sclerosing liposarcoma and high grade fibrosarcoma like dedifferentiated liposarcoma

dedifferentiated pleomorphic liposarcomas clustered tightly with 2 MFH UPS 2 leiomyosarcomas and 1 fibrosarcoma all of which possess the CDK4 MDM2 amplification Format JPEG Size 238KB Download file

5 cells leaving the upper well into the lower well was on 3 µm membrane about fif*** times higher and on 5 µm membrane about four times higher than the number of migrating H 4 II E cells Fig 1 Migration of differentiated H 4 II E and dedifferentiated H 5 cell lines Each assay was performed in duplicate and repeated twice Data are presented as means each error bar

chondrosarcoma dedifferentiated where one sees low grade chondrosarcoma with adjacent high grade sarcoma usually MFH

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tissues With transdifferentiation in the newt a lens can be regenerated from the dedifferentiation of iris pigmented epithelium or cartilage from dedifferentiated limb muscle tissue Transdifferentiation occurs in the culture of embryonic chick retina under certain culture conditions where the pigment disappears and lens specific proteins are made In jellyfish cell

If the slide opens in your browser select File > Save As to save it Click on image to view larger version Fig 1 Contrast enhanced abdominal computed tomography scans from three different patients A A 61 year old woman with a right retroperitoneal dedifferentiated liposarcoma This relatively

and malignant fibrous histiocytoma MFH Fig 6 The tumor was positive for CD99 but negative for desmin and CD34 A Ki67 stain demonstrated considerable proliferative activity Fig 7 Diagnosis Dedifferentiated Liposarcoma Retroperitoneum Mingyi Chen MD Donald R Chase MD Department of Pathology Loma Linda University and Medical Center

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90 cases occur in primary tumour 10 cases occur in recurrent tumour IMAGE LINK 1 2 3 Microscopic appearances Dedifferentiated areas are characterised by spindle

Click on image to view larger version Figure 2 Schematic representation of the initiation of atherosclerosis by hGX sPLA2 hGX sPLA2 is found in arterial wall where it colocalizes with foam cells and dedifferentiated smooth

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p53 gene alteration ***ysis A fluorescent loss of heterozygosity ***ysis Longer allele showing marked signal reduction only in dedifferentiated carcinoma component arrow B direct

differentiation within a progeny cell type Averages that are significantly different between cell types at a specific day of differentiation are indicated by P < 0 05 and P < 0 01 Click on the image to enlarge 3 3 Lipogenic gene expression during redifferentiation of dedifferentiated adipocytes

ESCOP ImageLink 1 2 3 4 Dedifferentiated liposarcoma is characterised by abrupt transition from low grade

lesion with calcifications in the proximal tibia Figure 1A CT scans revealed a poorly demarcated tumor with an eccentric non uniform calcification Figure 1B 1C and 1D Figure 1A An X ray showed an intramedullary osteolytic lesion with calcifications in the proximal tibia 1B 1C and 1D CT scans revealed a poorly demarcated

mass Liposarcoma WVSU www medskul com

Fig 3 TLC of gangliosides extracted from H 5 dedifferentiated H 4 II E and H 4 II E C3 both differentiated cell lines with immunostaining detection Gangliosides extracts equal to 50

Microscopic Pathology High Grade Surface Osteosarcoma Differential Diagnosis of High Grade Surface Osteosarcoma Parosteal Osteosarcoma Dedifferentiated Parosteal Osteosarcoma

CLOSE WINDOW Tumor from distal femur at time of reconstruction demonstrating dedifferentiated chondrosarcoma

in the dedifferentiated components right Immunohistochemistry original magnification × 250 Sakamoto et al World Journal of Surgical Oncology 2006 4 37 doi 10 1186 1477 7819 4 37 Download authors original image

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Grade 1 conventional chondrosarcoma is characterized by lobulated architecture with abundant cartilaginous matrix separated by narrow fibrovascular bands hematoxylin and eosin original

MICROSCOPIC DESCRIPTION

a b Immunohistochemical staining of pRB a Positive staining for pRB in dedifferentiated component Group 3 Case D1 b Almost all tumor cells are negative for pRB in the

Grade 2 conventional chondrosarcoma the tumor cells with cellular atypia have increased cellularity and myxoid matrix hematoxylin and eosin original magnification