neoplasia

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neoplasia

[‚nē·ə′plā·zhə]
(medicine)
Formation of a neoplasm or tumor.
Formation of new tissue.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Spindle neoplastic cells, moderately pleomorphic, arranged in interlaced bundles.
When the neoplastic cells of ALCL show histiocytic morphology, staining for other T-cell markers such as CD5 can be helpful.
Immunohistochemical analysis demonstrates the expression of keratins AE1/AE3, CD31, ERG, and FLI1 by both the spindle and the epithelioid neoplastic cells, with variable focal and weaker immunoreactivity for CAM5.2, smooth muscle actin, epithelial membrane antigen, and pan-cytokeratin MNF116, and usually no expression of CD34, desmin, and S100-protein.
These conditions were conducive to fungal propagation on the air sacs due to localized disruption of abdominal air sac epithelial immunity by implantation of metastatic neoplastic cells. This pathogenesis is consistent with the preponderance of the fungal hyphae and conidiospores on the abdominal air sacs rather than the lungs in this case.
Caption: Figure 4: Neoplastic cells had large vesicular nuclei with prominent nucleoli.
Thyroid core needle biopsy illustrates neoplastic cells staining positive for myeloperoxidase (A) and CD34 (B) (original magnification x40).
Based on tumor location, patients have variable clinical symptoms and signs, but pain is a common clinical finding due to an early perineural invasion of neoplastic cells [6-8].
Caption: Figure 7: Bladder tumor with negative stain for GATA 3 in neoplastic cells.
Caption: Figure 3: (a) The neoplastic cells were positive for CD138 (CD138 x200).
The classical variant is the most common and characterised by alveoli and/or trabeculae of large, polygonal neoplastic cells with voluminous, pale, flocculent, reticulated cytoplasm, irregular nuclear membrane, perinuclear cytoplasmic clearing, and prominent cell membrane.
Membrane staining of neoplastic cells was present in 19 pre-NACT biopsies (35%), with an extent ranging from 1 to 90% (Figures 1(c) and 1(d)).