INT51607
From wiki-pain
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Sentences Mentioned In
Key: | Protein | Mutation | Event | Anatomy | Negation | Speculation | Pain term | Disease term |
Muscle biopsy specimens showed myopathic changes, rimmed vacuoles, and accumulation of desmin, dystrophin, and other proteins. | |||||||||||||||
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Immunohistochemically the tumor stained positive for desmin and sm-actin and negative for CD34 and c-kit. | |||||||||||||||
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Immunohistochemical examination showed proliferating spindle cells, which were positive for vimentin and smooth muscle actin, but negative for desmin, CD34, cytokeratin, epithelial membrane antigen, S100 protein, and neuron specific enolase. | |||||||||||||||
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Immunohistochemically, the tumor cells showed strong diffuse positivity for HMB-45 while they were negative for c-kit, smooth muscle actin, cytokeratin, S-100, vimentin, desmin, chromogranin, synaptophysin, EMA, and CD-34. | |||||||||||||||
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The results showed spindle shaped tumor cells that were strongly positive for c-KIT by CD 117 immunohistochemical staining; other immunohistochemical staining was negative including actin, desmin, S-100 and CD 34 (Figures 2). | |||||||||||||||
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Immunohistochemical evaluation of the tumour showed a positive immunoreactivity for vimentin, alpha and beta subunits of S-100 protein, neurone-specific enolase (NSE), substance P, met-enkephalin and chromogranin but cytokeratins, desmin, actin, myosin, glial fibrillary acidic protein (GFAP) and calcitonin gene related peptide (CGRP) were negative. | |||||||||||||||
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Histological examination of this mediastinal mass revealed a thymolipoma containing numerous polygonal, striated myoid cells that were immunoreactive for desmin, muscle-specific actin and myoglobin. | |||||||||||||||
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In the present case, the IHC is positive for EMA and desmin, which are smooth muscle markers and CD-68 is an inflammatory marker, suggesting the tumor to be IMT. | |||||||||||||||
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By immunohistochemical evaluation, the cells were: (a) positive for vimentin and ALK-1 (Fig 5); (b) focally positive for cytokeratins 8/18/19, muscle specific and smooth muscle actins, and desmin; (c) negative for S-100, CD34, c-Kit (CD117), h-caldesmon and MyoD1. | |||||||||||||||
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Histological and Immunohistochemical studies in our patients showed a mean maximum diameter of the schwannomas of 12,7 cm (720 cm), with areas of degeneration (cases 2, 4 and 5) and atypia (cases 1 and 3), while all were positive for vimentin and S-100 and negative for desmin, smooth muscle actin and HHF35. | |||||||||||||||
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Like the ICC, GISTs have a classic immunohistochemical (IHC) staining pattern (positive for CD34, S-100, DES, keratin, negative for desmin), and, also like the ICC, GIST cells strongly express two kinases, c-kit and platelet-derived growth factor receptor (PDGF-R). | |||||||||||||||
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By immunohistochemistry, all tumors examined were positive for SMA, 1 was positive for desmin, and all were negative for caldesmon and S-100 protein; none showed nuclear staining for beta-catenin. | |||||||||||||||
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The tumor cells were immunoreactive for vimentin, desmin, smooth muscle actin, and muscle-specific actin in three of the four cases and were negative for S-100 protein. | |||||||||||||||
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Immunohistochemical study results showed that the tumor cells were positive for vimentin, alpha-1-antichymotrypsin (AACT) and desmin staining, and negative for alpha-fetoprotein (AFP), and eosinophilic hyaline globules in the cytoplasm of some giant cells were strongly positive for periodic acid-Schiff (PAS) staining. | |||||||||||||||
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In the immunohistochemical study, the tumor was negative for desmin, muscle-specific actin, estrogen, progesterone receptors and CD31, but was positive for vimentin. | |||||||||||||||
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Immunohistochemistry showed the spindle cells to be immunoreactive for vimentin, smooth muscle actin and muscle specific actin and, focally, for desmin; immunostaining for cytokeratin, epithelial membrane antigen, S-100 protein, factor VIII-related antigen, and CD34 was negative. | |||||||||||||||
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The tumor cells were all immunoreactive for vimentin, CD 34, and focally actin-positive in one case, but not for keratin, desmin, S-100 protein, carcinoembryonic antigen, alpha 1-ACT and F VIII-related antigen, supported a primitive mesenchymal origin. p53 protein was expressed in two of the malignant cases. | |||||||||||||||
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The glandular epithelium was decorated with antibodies to pan-cytokeratin, CK7, BER-EP4, ER, and PR, whereas the stromal cells showed positive staining for vimentin, actin, smooth muscle actin, desmin, ER, and PR. | |||||||||||||||
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The cells were focally positive for the muscle markers including h-caldesmon, desmin, actin and myoglobin. | |||||||||||||||
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Some cells were positive for desmin and myogenin (figure 2b, 2c). | |||||||||||||||
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General Comments
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