pleomorphism

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Related to Nuclear pleomorphism: hyperchromatism

pleomorphism

 [ple″o-mor´fizm]
the assumption of various distinct forms by a single organism or within a species. adj., adj pleomor´phic, pleomor´phous.

pol·y·mor·phism

(pol'ē-mōr'fizm),
Occurrence in more than one form; existence in the same species or other natural group of more than one morphologic type.
Synonym(s): pleomorphism

pleomorphism

/pleo·mor·phism/ (-mor´fizm) the occurrence of various distinct forms by a single organism or within a species.pleomor´phicpleomor´phous

pleomorphism

(plē′ə-môr′fĭz′əm)
n.
1. Chemistry See polymorphism.
2. Biology The occurrence of two or more distinct forms, as of an organism during its life cycle or of cells of a certain type.

ple′o·mor′phic adj.

pol·y·mor·phism

(pol'ē-mōr'fizm)
Occurrence in more than one form; existence in the same species or other natural group of more than one morphologic type.
Synonym(s): pleomorphism.

pleomorphism

Taking different physical forms. Also known as polymorphism.

pol·y·mor·phism

(pol'ē-mōr'fizm)
Occurrence in more than one form; existence in same species or other natural group of more than one morphologic type.
Synonym(s): pleomorphism.

pleomorphism (plē´əmôr´fiz´əm),

n the ability to change shape or form.

pleomorphism

having more than one shape or form.
References in periodicals archive ?
Histologically, the tumour shows intersecting fascicles of spindle cells with cigar-shaped nuclei and eosinophilic cytoplasm without significant nuclear pleomorphism or tumour necrosis.
Papillary component showed irregular luminal border, high nuclear to cytoplasmic ratio, and marked nuclear pleomorphism.
Our patient had a known history of OFMT that was labeled as an atypical/malignant variant because of the high cellularity and nuclear pleomorphism it displayed.
Our case showed a mixed population of spindle cells (predominantly) and epithelioid/plasmacytoid cells, demonstrating nuclear pleomorphism, coarse and clumped chromatin, variable inconspicuous to multiple prominent small nucleoli, and occasionally bi-nucleated tumour giant cells/ bizarre nuclei; and lacks the main cytological features elaborated above of conventional melanoma.
B and C, In contrast, pleomorphic lobular carcinoma cells display significant nuclear pleomorphism, abundant eosinophilic cytoplasm, nuclear hyperchromasia, nuclear membrane irregularities, and prominent nucleoli.
Histopathologic examination of the biopsied mass reveals spindle cells with nuclear pleomorphism.
Microscopic analysis will reveal nests of closely packed polyhedral cells that frequently demonstrate nuclear pleomorphism.
IPEH can also occur concomitantly with frank angiosarcoma, making the distinction between these two entities even more challenging, in particular if there is a lack of pathohistologic findings of marked cellular and nuclear pleomorphism, and significant mitotic activity.
2,17,19) Atypical features, including increased mitotic activity, cytologic atypia with nuclear pleomorphism, prominent nucleoli, hyperchromasia, and necrosis, if observed, are usually associated with cases that either recurred or had a malignant clinical outcome (Figure 1, F).
Mild nuclear pleomorphism was seen, and the mitotic activity was low.
Nuclei showed prominent nucleoli and areas of nuclear pleomorphism in keeping with a Fuhrman nuclear grade 4.
20) Cytologic features of invasive cancer were subjectively graded (nuclear enlargement, nuclear pleomorphism, size and distribution of macronucleoli) using a semiquantitative scale from 1 to 3.