Morphologically, they tend to have a high degree of nuclear atypia.

However, the atypia is not to the extent as seen in frank adenocarcinomas.

Severe nuclear atypia is, in most cases, considered an indicator of malignancy.

Grade 2 tumors meet one criterion, usually nuclear atypia.

Grade 3 tumors meet two criteria, usually nuclear atypia and mitosis.

There is no associated inflammatory response and no cellular atypia.

Marked nuclear atypia and any level of mitotic activity.

The term atypia is also used dermatologically and can be a precursor to melanoma.

In addition, in patients receiving chemotherapy, keratinocyte atypia can be seen.

It is not meant for women who have had a breast biopsy showing "atypia" or "hyperplasia."

Individual cellular features of dysplasia are called epithelial atypia.

Nuclear atypia refers to abnormal appearance of cell nuclei.

Nuclear atypia can be minimal or marked.

These lesions typically show no nuclear atypia.

In this classification, a nevus can be defined as benign, having atypia, or being a melanoma.

When cellular atypia is noted, a pathologist might indicate that the entire lesion should be removed.

PIN was historically subdivided into different stages, based on the level of cell atypia.

The 'further back' in an already specialised, differentiated cell's lineage, the more problematic cellular atypia is likely to be.

Dysplasia, in the context of precancer, is somatically inherited nuclear atypia.

Nuclear atypia can be seen in reactive changes, pre-neoplastic changes and malignancy.

The precuror lesions tend to have the morphology of simple hyperplasias, without much nuclear atypia.

Epithelial atypia or dysplasia may be present.

Once inside they begin to proliferate and cause nuclear atypia(this is known as intraerythrocytic B.quintana colonization).

Nuclear atypia, if present, is mild.

Cellular (cytoplasmic) pleomorphism (atypia) - cells are of abnormal and different shapes.

The same year was the T77 presented at Paris motorshow where it became the center of attention not only due to its atypism, but also due to its performance.

Oligoastrocytomas, like astrocytomas and oligodendrogliomas, can be divided into low-grade and anaplastic variant, the latter characterized by high cellularity, conspicuous cytologic atypism, mitotic activity and, in some cases, microvascular proliferation and necrosis.