Search results for "Periodic Acid-Schiff Reaction"

showing 3 items of 3 documents

Synovial sarcoma and malignant mesothelioma of the pleura: Review, differential diagnosis and possible role of apoptosis

2001

Synovial sarcoma of the pleural cavity is exceptionally rare and may be confused, both clinically and histologically, with malignant mesothelioma, with subsequent inappropriate therapy. To address this dilemma, four biphasic synovial sarcomas (BSSs) and four biphasic malignant mesotheliomas (BMMs) were studied with a panel of mucin and immunohistochemical stains to determine if they would allow one to distinguish between the two. The BMMs were all pleural-based. The BSSs were extrapleural. The mucin and immunohistochemical stains were all performed on formalin-fixed, paraffin-embedded tissue using standard techniques, with appropriate positive and negative controls. Mucin present in BSS is,…

AdultMaleMesotheliomaPathologymedicine.medical_specialtyAdolescentPleural Neoplasms2734ApoptosisPathology and Forensic MedicineNeoplasms Multiple PrimarySynovial sarcomaSarcoma SynovialPleural diseaseBiomarkers TumormedicineHumansMesotheliomaMalignant mesotheliomaAgedAged 80 and overStaining and Labelingbusiness.industryMucinApoptosis; Immunohistochemistry; Malignant mesothelioma; Synovial sarcoma; 2734MucinsApoptosiMiddle AgedPeriodic Acid-Schiff ReactionPleural cavitymedicine.diseaseImmunohistochemistrySynovial sarcomamedicine.anatomical_structureFemaleAlcian BlueSarcomaNeoplasm Recurrence LocalDifferential diagnosisCalretininbusiness
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Solid variant of mammary "adenoid cystic carcinoma with basaloid features" merging with "small cell carcinoma"

2005

We describe a rare case of a solid variant of a mammary adenoid cystic carcinoma with basaloid features (sbACC) and its coexistence with a "small cell" carcinoma (SCC), identified and confirmed by histological and immunohistochemical observations: the absence of glandular structures and PAS-positive globules, positivity for neuroendocrine markers (NSE, synaptophysin and chromogranin), and negativity for 34betaE12 and SMA actin were the aspects suggesting the presence of SCC. Furthermore, positivity for CD10 was found both in sbA CC and in SCC, supporting the hypothesis that the two components share the same histogenetic myoepithelial origin and represent an example of dedifferentiation alon…

AdultPathologymedicine.medical_specialtyAdenoid cystic carcinoma2734Breast NeoplasmsBiologyHistogenesisSettore MED/08 - Anatomia PatologicaMastectomy SegmentalSmall-cell carcinomaPathology and Forensic MedicineNeoplasms Multiple PrimaryBiomarkers TumormedicineCarcinomaHumansBreastCarcinoma Small CellneoplasmsSmall cell carcinomaMyoepithelial cellChromogranin ABasaloid adenoid cystic carcinomaCell BiologyPeriodic Acid-Schiff Reactionmedicine.diseaseCarcinoma Adenoid CysticImmunohistochemistrystomatognathic diseasesSettore MED/18 - Chirurgia GeneraleCarcinoma Basal CellChemotherapy AdjuvantAxillaSynaptophysinbiology.proteinLymph Node ExcisionImmunohistochemistryFemaleBasaloid adenoid cystic carcinoma; Breast; Small cell carcinoma; Adult; Axilla; Biomarkers Tumor; Breast Neoplasms; Carcinoma Adenoid Cystic; Carcinoma Basal Cell; Carcinoma Small Cell; Chemotherapy Adjuvant; Female; Humans; Immunohistochemistry; Lymph Node Excision; Mastectomy Segmental; Neoplasms Multiple Primary; Periodic Acid-Schiff Reaction; 2734Breast NeoplasmHuman
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Ultrastructure and formation of the physogastric termite queen cuticle

1982

0040-8166 (Print) Journal Article; The physogastric termite queen is the most striking example in insects of growth in size without cuticular moulting. This phenomenon has been studied with electron microscopy and histochemical tests in two species of higher termites, Cubitermes fungifaber and Macrotermes bellicosus. The abdominal hypertrophy (physogastry) is allowed by growth of the arthrodial membranes of the swarming imago. The growth is slow (over several years) but important: the cuticular dry weight is multiplied by 20 in C. fungifaber, by 100-150 in M. bellicosus. The termite queen cuticle arises from the transformation of the cuticle of the swarming imago or imaginal cuticle (unfold…

MaleInsectaMembranes/ultrastructureSwarming (honey bee)Arthropod cuticleElectronMacrotermes bellicosusAnimalsGlycosaminoglycansGlycosaminoglycans/analysisMicroscopyMembranesbiologyHistocytochemistryCell BiologyGeneral MedicineAnatomyPeriodic Acid-Schiff Reactionbiology.organism_classificationMicroscopy ElectronCubitermes fungifaberUltrastructureFemaleMoultingInsects/analysis/*growth & development/ultrastructureDevelopmental Biology
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