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At least 1,261 records · Page 70Linked to original sources
PubMed2004

[Inflammatory myofibroblastic tumours of the bladder].

The inflammatory myofibroblastic tumour of the bladder is a rare benign affection that interests mainly young adults. Its etiopathogeny remains unknown, but its tumoral origin was evocated recently by Griffin (1999), incriminating a chromosomic abnormality involving the ALK gene. We will discuss the etiopathogenic, anatopathological and therapeutical aspects of this lesion for which the diagnosis is histological and the treatment remains conservative with a good prognosis.

Adult↗
PubMed1991

[Solitary and multiple granular cell tumors. Case reports and review of the literature].

Two patients with multiple granular cell tumours (GZTs) of the skin and one patient with GZT of the tongue are reported. The tumours had been becoming larger for several years without subjective symptoms. Only the GZT of the tongue was diagnosed correctly before surgery; the cutaneous GZTs were identified only at histological examination. Benign GZTs reveal similar histomorphological features. In contrast, immunohistochemical studies yield conflicting results. Thus, cellular differentiation of GZT is still controversial. On current evidence, GZTs represent a distinct entity with a common histogeneis. The most widely accepted theory is that they originate from a cell in the peripheral nerve system, which has not yet been more precisely characterized.

Adult↗
PubMed1991

Soft tissue myofibroblastomas.

Five well-circumscribed solitary soft tissue tumors composed of myofibroblasts are described and termed myofibroblastomas. By light microscopy these lesions are characterized by short, intersecting, or crisscrossing fascicles of spindle cells, sometimes associated with foci of necrosis and/or mitotic activity with less than three mitoses per 10 high power fields. Myofibroblastomas show well-defined myofibroblastic differentiation ultrastructurally with peripheral myofilaments and vimentin, actin, and desmin immunocytochemistry positivity. The five tumors described occurred in patients of various age groups, including one congenital, and in a variety of soft tissue locations. It is important to recognize this benign soft tissue neoplasm to avoid confusion with other soft tissue tumors and to separate this lesion from other myofibromatosis. This study elucidates the spectrum of light microscopic, ultrastructural, and immunocytochemistry findings of soft tissue myofibroblastomas and establishes this soft tissue tumor as a specific clinico-pathologic entity.

Actins↗
PubMed1991

[Granular cell tumor (Abrikossoff tumor) in the digestive and respiratory tracts--two new observations].

Granular cell tumor is one of the rare neoplasms of presumptively neural origin of the alimentary and respiratory tracts. Two new endoscopically and histologically confirmed observations are presented. The radiological appearance (conventional radiography and x-ray computed tomography) is described in detail and compared with the findings published in the literature.

Digestive System Neoplasms↗