rhabdomyoma/peroxidase

A case of recurrent rhabdomyoma in the oropharynx of a 72-year-old man is presented. Diagnosis was based on routine histology, and in the third and last recurrence it was further established by electron microscopy, immune peroxidase staining for myoglobin, actin and fibronectin, and special strains.

A case of adult type rhabdomyoma in the neck region of a 77-year-old man is presented. In electron microscopy, some tumour cells showed irregularly orientated sarcomere formation with distinct Z-bands. All cells contained rod-like inclusions with attached thin cytoplasmic filaments. When stained

Z-protein, a new muscle protein with a molecular weight of 55,000 daltons recently discovered in Japan, is an excellent marker for muscle differentiation in paraffin sections. Positive staining by a peroxidase-antiperoxidase technique for detection of intracellular Z-protein was observed in 2 of 2

Muscle-specific actin (MSA) and desmin are considered to be sensitive and specific markers for muscle differentiation. The authors compared staining patterns for these markers in 576 samples of normal, reactive, and neoplastic tissues. The standard avidin-biotin-peroxidase complex technique was

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

The diagnostic utility of several antibodies against desmin and their optimal staining conditions have not been systematically evaluated. Sections of paraffin-embedded tissues from 584 cases were stained with a monoclonal antibody against desmin (Clone DER 11 from DAKO), using an

OBJECTIVE Retrospective study of surgical pathology experience on cardiac and pericardial tumors at the University of Padua in the era of immunohistochemistry and endomyocardial biopsy. METHODS In the period 1970-1995, we studied 125 bioptic primary neoplasms: specimens were obtained from surgical