Pindborg tumor: Not all Congo red-positive amyloid-like areas show apple-green birefringence under polarizing microscope
نویسندگان
چکیده
منابع مشابه
PRIMARY LOCALIZED RETROPERITONEAL AMYLOID TUMOR WITH OSSEOUS META PLASIA: CASE REPORT AND REVIEW OF THE LITERATURE
Amyloidoma or amyloid tumor is a tumor-like localized deposit of amyloid encountered occasionally in association with multiple myeloma, various chronic inflammatory diseases and primary amyloidosis. Amyloid tumors unassociated with plasmacytoma or other disease are extremely rare in soft tissues and few cases in various situations have been reported. Histologic examination discloses amorp...
متن کاملPrimary cutaneous amyloidosis: a clinico-pathological study with emphasis on polarized microscopy.
BACKGROUND Primary localized cutaneous amyloidosis (PCA) is a relatively rare condition characterized by amyloid deposition in dermis without systemic involvement. Although, histopathological examination of the lesion reveals amorphous eosinophilic deposits in papillary dermis examination of congo red stained slides under polarized light will give definitive diagnosis AIMS To study the clinic...
متن کاملprimary localized retroperitoneal amyloid tumor with osseous meta plasia: case report and review of the literature
amyloidoma or amyloid tumor is a tumor-like localized deposit of amyloid encountered occasionally in association with multiple myeloma, various chronic inflammatory diseases and primary amyloidosis. amyloid tumors unassociated with plasmacytoma or other disease are extremely rare in soft tissues and few cases in various situations have been reported. histologic examination discloses amorphous e...
متن کاملDigitally reinforced polarization of hematoxylin-eosin in the diagnosis of renal amyloidosis.
OBJECTIVE Systemic amyloidosis is a rare disorder, characterized by extracellular accumulation of Congo red positive fibrillar amyloid protein deposits that have an amorphous, eosinophilic appearance on hematoxylin-eosin stained preparations. The kidney is the most commonly affected organ by systemic amyloidosis. Congo red staining increases the positive birefringence of the weakly birefringent...
متن کاملPositive staining with Congo red in tissues with heat artifact due to cautery.
Congo red staining is rarely the source of false positives for amyloid. On the other hand, the heat artifact due to cautery in surgical specimens adopts some hyaline features, which can mimic amyloid deposits many times. Therefore, we decided to investigate the behavior of these artifacted areas with some of the ancillary techniques that are commonly used when diagnosing amyloidosis: Congo red ...
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ژورنال
عنوان ژورنال: Journal of Dental Sciences
سال: 2021
ISSN: 1991-7902
DOI: 10.1016/j.jds.2020.12.001