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Results for “Muscle Neoplasms”

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At least 919 records · Page 51Linked to original sources
PubMed1991

[Tracheo-bronchial granular cell tumors. Apropos of 4 cases].

We have seen four cases of granular cell tumor (Abrikossoff's tumour) and it is recalled that these tumours are most often discovered fortuitously by bronchoscopy in the tracheo-bronchial region because they have a non specific clinical presentation. The cytological and histological characteristics enable an accurate diagnosis but there are problems posed as to the histogenesis of these tumours. With a tumour with a slow progression regular surveillance with regular biopsies seems preferable as in certain cases the tumour regresses spontaneously or disappears after ablation with the forceps. A good alternative approach is destruction of the tumours with a laser in certain complicated forms which enables one to avoid surgical excision.

Adolescent↗
PubMed1976

[Granular cell pituicytoma (choristoma) of the pituitary stalk].

A case of granular cell tumour in the pituitary stalk is described marked by the sudden loss of visual acuity in the left eye, followed by the right years later. A comparison with 17 cases previously published and with cases of asymptomatic granular cell nodules leads the authors to suggest the term granular cell pituicytoma. They discuss the place of this neoformation among other systemic granular cell tumours (granular cell myoblastoma). Fifteen patients were operated on, complete excision being carried out in only three (including the case published). Whether complementary cobalt therapy is useful remains problematical since very few cases have been published because of the slow development of the neoplasm.

Choristoma↗
PubMed1977

Interrelationships and functions of the pyruvate kinase isozymes and their variant forms: a review.

The relationships among and the properties of the pyruvate kinase isozymes are reviewed, emphasizing their potential role in carcinogenesis. Particular consideration is given to evaluation of the concept that the three major nonreadily interconvertible forms are the products of distinct genes, the relationship of these forms to additional separable forms of pyruvate kinase, the types and possible functions of interconvertible forms of the major isozymes, and mechanisms affecting the genetic expression of the isozymes. Emphasis is placed upon the apparent derepression of the fetal isozyme in hepatomas and the influence of neoplasms and their extracts on the expression of pyruvate kinase in the liver of host animals.

Animals↗
PubMed1977

[Primary maxillary location of myoblastoma].

The authors report the case of a myoblastoma with multiple successive and rare localisations: maxilla, cheek, lymphatics, lungs, liver and hyoid bone, with a fatal course over 28 months. They recall the possible malignancy of this tumour even in the absence of histological criteria and suggest its classification on bases which at present are only clinical.

Adult↗
PubMed1977

[Fine structure of the myoblastic myoma].

A series of 10 myoblastic myomas were examined with the light and electron microscope. Based on electron microscopical examinations, the findings permitted to divide the cases according to their most probable histogenesis in two groups as follows: a) the granular lesions of the appendix and those of the hypophyseal infundibulum most probably originate from nervous tissue; b) the lesions of the skin and the tongue most probably are results of alterations of cell metabolism.

Appendiceal Neoplasms↗
PubMed1978

[Granular cell myoblastoma].

Authors report a case of multiplex myoblastoma of the skin observed at a male patient aged 34. Epidermies covering the tumour histologically did not show hyperplasia considered to be characteristic. 8 years after the removal of the tumour the patient is well.

Adult↗
PubMed1990

[Granular cell tumor of the vulva].

Granular cell tumor is a relatively uncommon entity of unknown etiology and uncertain histogenesis. A case of granular cell tumor of the vulva is presented with a discussion of the clinical features, pathological characteristics and the histogenic theories of its origin.

Adult↗
PubMed1990

Surgical management of thyroid carcinoma with laryngotracheal invasion.

Thyroid carcinoma that invades the airway can, in most cases, be treated by partial laryngectomy or partial tracheal resection. Total laryngectomy or circumferential tracheal reconstruction may be required in patients with extensive disease. Closure of subglottic and tracheal defects can be accomplished with the sternocleidomastoid myoperiosteal flap in a simple, single-staged procedure. Patterns of invasion and appropriate reconstruction are described.

Cricoid Cartilage↗