Search Results for undifferentiated

UNDIFFERENTIATED NEUROBLASTOMA: IMMUNOHISTOCHEMISTRY Figure 11-35 UNDIFFERENTIATED NEUROBLASTOMA: IMMUNOHISTOCHEMISTRY A: Undifferentiated NB for which immunohistochemistry was needed for classification shows extensive cytoplasmic staining for synaptophysin with a slightly granular aspect. B More about this image found in UNDIFFERENTIATED NEUROBLASTOMA: IMMUNOHISTOCHEMISTRY A: Undifferentiated N...

UNDIFFERENTIATED NEUROBLASTOMA Figure 11-12 UNDIFFERENTIATED NEUROBLASTOMA Closely packed, poorly differentiated neuroblasts form solid sheets. Patterns such as this may cause confusion with other childhood neoplasms such as malignant lymphoma. Most nuclei have a single, small nucleolus More about this image found in UNDIFFERENTIATED NEUROBLASTOMA Closely packed, poorly differentiated neuro...

UNDIFFERENTIATED NEUROBLASTOMA WITH SPINDLE CELL DIFFERENTIATION Figure 11-16 UNDIFFERENTIATED NEUROBLASTOMA WITH SPINDLE CELL DIFFERENTIATION This stage 3 NB in a 5-year-old girl was not pretreated and showed this peculiar undifferentiated spindle cell morphology without presence of neuropil More about this image found in UNDIFFERENTIATED NEUROBLASTOMA WITH SPINDLE CELL DIFFERENTIATION This stag...

UNDIFFERENTIATED NEUROBLASTOMA WITH LARGE CELL HISTOLOGY Figure 11-17 UNDIFFERENTIATED NEUROBLASTOMA WITH LARGE CELL HISTOLOGY This tumor was originally diagnosed as malignant rhabdoid tumor on the basis of morphology and loss of BRG1 immunostaining, until resection showed foci of ganglion cell More about this image found in UNDIFFERENTIATED NEUROBLASTOMA WITH LARGE CELL HISTOLOGY This tumor was or...

UNDIFFERENTIATED NEUROBLASTOMA Figure 11-27 UNDIFFERENTIATED NEUROBLASTOMA This tumor could not be diagnosed by morphology only, but was shown to be a NB on the basis of positive cytoplasmic staining of chromogranin A (shown here), synaptophysin, and tyrosine hydroxylase, and nuclear staining More about this image found in UNDIFFERENTIATED NEUROBLASTOMA This tumor could not be diagnosed by morpho...

SMALL BLUE ROUND CELL TUMOR Figure 11-11 SMALL BLUE ROUND CELL TUMOR Immunohistochemically, this tumor was shown to be undifferentiated NB. The cellular tumor is composed of undifferentiated cells with atypical nuclei and scant cytoplasm. No stroma or ganglion cell differentiation is present. More about this image found in SMALL BLUE ROUND CELL TUMOR Immunohistochemically, this tumor was shown to...

NEUROBLASTOMA WITH NUMEROUS MITOTIC AND APOPTOTIC FIGURES Figure 11-34 NEUROBLASTOMA WITH NUMEROUS MITOTIC AND APOPTOTIC FIGURES Area of undifferentiated NB with numerous apoptotic bodies and a few potential mitotic figures, illustrating the approach to mitosis karyorrhexis counting. More about this image found in NEUROBLASTOMA WITH NUMEROUS MITOTIC AND APOPTOTIC FIGURES Area of undiffer...

STROMA-POOR NEUROBLASTOMA Figure 11-13 STROMA-POOR NEUROBLASTOMA A: The tumor cells are separated by pale pink fibrillary material representing neuritic cell processes. The tumor was largely undifferentiated, with only rare cells showing early ganglion cell differentiation. B: A different tumor More about this image found in STROMA-POOR NEUROBLASTOMA A: The tumor cells are separated by pale pink fi...

). Histopathology showed an undifferentiated NB, with MYCN amplification, indicative of a high-risk NB patient. (Courtesy of Dr. A. J. Braat, University Medical Center Utrecht, The Netherlands) More about this image found in METAIODOBENZYLGUANIDINE (MIBG) SCAN OF WIDELY METASTASIZED NEUROBLASTOMA A...

UNDIFFERENTIATED MELANOMA Figure 21-8 UNDIFFERENTIATED MELANOMA An amelanotic undifferentiated malignant spindle cell neoplasm is seen. It was initially interpreted as sarcoma by a soft tissue pathologist, but the diagnosis was revised to metastatic melanoma after sequence analysis revealed UV More about this image found in UNDIFFERENTIATED MELANOMA An amelanotic undifferentiated malignant spindle...

CARDIAC UNDIFFERENTIATED PLEOMORPHIC SARCOMA Figure 53-1 CARDIAC UNDIFFERENTIATED PLEOMORPHIC SARCOMA Left: Computerized tomographic (CT) reconstruction shows a low-density mass invading the left atrium (yellow arrow). Right: Axial CT fused with fluorodeoxyglucose (FDG)-positron emission More about this image found in CARDIAC UNDIFFERENTIATED PLEOMORPHIC SARCOMA Left: Computerized tomographi...

CARDIAC UNDIFFERENTIATED PLEOMORPHIC SARCOMA IN SITU Figure 53-2 CARDIAC UNDIFFERENTIATED PLEOMORPHIC SARCOMA IN SITU This left atrial tumor (yellow asterisk) is growing within the dome of the left atrium and infiltrating its wall. More about this image found in CARDIAC UNDIFFERENTIATED PLEOMORPHIC SARCOMA IN SITU This left atrial tumo...