granular cell tumor/peroxidase

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Granular cell tumor of the lower lid: histological and immunohistochemical studies.

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Histological and immunohistochemical studies of a granular cell tumor involving the lower lid are described. Histological examination showed it to have typical features of a granular cell tumor. Nervous-system-specific protein (S-100 protein) was detected in both the nuclei and cytoplasm of granular

Granular cell tumor arising in myelinated peripheral nerves. Light and electron microscopy and immunoperoxidase study.

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The histologic, immunohistochemical and ultrastructural characteristics of two granular cell tumors arising from the right recurrent laryngeal and left facial nerves are described. S-100 protein was detected both in the nuclei and cytoplasm of the granular cells using the peroxidase-anti-peroxidase

Immunohistochemical localization of S-100 protein in granular cell myoblastoma.

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The presence and distribution of S-100 protein were studied in three cases of granular cell myoblastoma using the peroxidase-anti-peroxidase method. Positive immunostaining was observed in all cases. The densely brown reaction products were found both in the nuclei and in the cytoplasm of

Granular cell tumor of the ascending colon: a case report.

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A granular cell tumor (granular cell myoblastoma) of the ascending colon in a 48-year old male is reported. The tumor was detected by barium enema study as a sessile polyp, and colonofiberscopy revealed submucosal tumor. It was removed by endoscopic polypectomy. Macroscopic examination showed the

Granular cell tumor of the orbit.

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An 18-year-old woman had a 3-month history of increasing proptosis and visual loss secondary to an inferior orbital mass. Surgical exploration revealed an encapsulated mass in the orbit. After this mass was excised good vision was restored. The diagnosis of granular cell tumor was made as a result

Central granular cell tumor of the jaw. An electron microscopic and immunohistochemical study.

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Central granular cell tumor of the jaw was formerly known as granular cell ameloblastic fibroma; recently, the term central granular cell odontogenic fibroma has been proposed. This study attempts to determine the ultrastructural features and selected immunohistochemical properties of the tumor

Oral granular cell tumors: a clinicopathologic and immunocytochemical study.

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To investigate the histogenesis of the granular cell, a large series of granular cell tumors was studied for clinical and histopathologic features with emphasis on immunocytochemical markers. The nongingival granular cell tumors (NGGCT) were found to be more prevalent among females than males by a

Immunohistochemical localization of S-100 protein and peripheral nerve myelin proteins (P2 protein, P0 protein) in granular cell tumors.

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The presence and distribution of nervous-system-specific protein (S-100 protein), peripheral nerve myelin proteins (P2 protein and P0 protein) that have not been given any attention in the field of tumor pathology, and striated muscle-related proteins (myoglobin and myosin) were studied in 18 cases

[Granular-cell tumor (Abrikosov). Immunohistological study of 4 cases with review of the literature].

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Granular-cell tumour (GCT) is a benign neoplastic proliferation first described by Abrikossoff (1), who considered it to be of muscular origin. Since then, however, the histogenesis of GCT has been a matter of serious controversy, and various cell types have been considered as being the origin of

Oral granular cell lesions. An immunohistochemical study with emphasis on intermediate-sized filaments proteins.

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Six cases of oral granular cell lesions were studied with respect to intermediate-sized filaments (IF), peanut lectin binding (PNL) and muramidase activity by means of the peroxidase antiperoxidase technique. The tumours included three granular cell myoblastomas of the tongue (GCM) two cases of

Value of S-100 protein in the diagnosis of soft tissue tumors with particular reference to benign and malignant Schwann cell tumors.

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Two hundred and two benign and malignant soft tissue lesions were studied for the presence of S-100 protein by means of the peroxidase-antiperoxidase technique on formalin-fixed, paraffin-embedded tissue. Virtually all benign nerve sheath tumors (neurofibroma, neurilemoma, and granular cell tumor)

S-100 protein in soft-tissue tumors derived from Schwann cells and melanocytes.

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In soft tissues outside the central nervous system, S-100 protein is found normally only in Schwann cells. Using the peroxidase-antiperoxidase immunohistochemical method S-100 was also found in tumors derived from Schwann cells and melanocytes, including neurofibromas, neurilemomas, granular cell

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