1) The epithelioid
subtype is more rare and represents a well-recognized entity comprising of about 5 percent of these tumors.
4) Therefore, we would like to recommend immunohistochemical examinations (progesterone receptor and pancreatic polypeptide) for differentiating GP from NET G1, because it has been revealed that the typical epithelioid
cells of GP show positive immunoreactivity for both immunohistochemistries, but tumor cells of NET G1 were negative for both immunohistochemistries.
Keywords: Kidney tumor, perivascular epithelioid
cell tumor, partial nephrectomy
sarcoma (ES) is a rare, slow-growing, soft-tissue sarcoma with granuloma-like appearance.
cells in both human tuberculosis and sarcoidosis are also 'primarily biosynthetic rather than phagocytic'.
reticular cells were arranged concentrically and interpreted as Hassall corpuscles.
1,2) There are different types of splenic angioendothelioma such as kaposiform angioendothelioma, myoid angioendothelioma (MAE) and epithelioid
Dermis shows acute inflammatory infiltrate with abscess, epithelioid
granuloma and caseous necrosis.
The histopathology of biopsy material taken from a plaque on the right axillary region revealed atrophic epidermis, preserved grenz zone, dermal edema and clusters of mature epithelioid
cells, rare giant cells and some lymphocytes between the histiocytic granulomas.
Upon immunohistochemical staining, however, the "immunostain panel does not support epithelioid
sarcoma, melanoma, angiosarcoma, malignant peripheral nerve sheath tumor, renal cell carcinoma, or leiomyosarcoma," said the researchers.
The cellular proliferation, both spindle and epithelioid
, showed characteristic perivascular accentuation with positive staining for smooth muscle actin [Figure 4c] and HBM-45 protein [Figure 4d].
We report a case of epithelioid
angiosarcoma involving the urinary bladder and prostate in a patient with a history of external beam radiation for prostatic adenocarcinoma.