1 : not typical : irregular, unusual an atypical form of a disease atypical weather for this area.

Atypical Behaviour A psychological condition or behaviour that departs from the norm or is harmful and distressing for the individual or those around them.  These types of behaviours usually violate what society feels is appropriate.

The definition of atypical is someone or something unusual or abnormal. A foxtrot mixed with a hip hop dance performance is an example of atypical. A single white rose growing on an all red rose bush is an example of atypical.

Atypical account usage is behavior that is not part of normal usage cycles, for example, user account activity occurring after hours or on weekends.

Atypical (ay-TIP-ih-cul) is a medical word for “abnormal.” Doctors may use this word to describe cells or body tissues that look unusual under a microscope. They might also say your case is atypical if you don’t have the usual symptoms of your type of cancer.

Atypical cells can change back to normal cells if the underlying cause is removed or resolved. This can happen spontaneously. Or it can be the result of a specific treatment.

Atypical hyperplasia is generally treated with surgery to remove the abnormal cells and to make sure no in situ or invasive cancer also is present in the area. Doctors often recommend more-intensive screening for breast cancer and medications to reduce your breast cancer risk.

Atypical hyperplasia (or atypia) means that there are abnormal cells in breast tissue taken during a biopsy. (A biopsy means that tissue was removed from the body for examination in a laboratory.) These abnormal cell collections are benign (not cancer), but are high-risk for cancer.

Many factors can make normal cells appear atypical, including inflammation and infection. Even normal aging can make cells appear abnormal. Atypical cells can change back to normal cells if the underlying cause is removed or resolved. This can happen spontaneously.

Atypical hyperplasia is a precancerous condition that affects cells in the breast. Atypical hyperplasia describes an accumulation of abnormal cells in the milk ducts and lobules of the breast. Atypical hyperplasia isn’t cancer, but it increases the risk of breast cancer.

ACUS is an abbreviation for “atypical cells of undetermined significance”. This occurs when the thyroid FNA findings don’t show for sure if the nodule is either benign or malignant. The pathologist looks at the cells and just can’t be sure if it is cancer, or non-cancer (beingn).

Atypical: Cells that are not normal but are not cancerous. Atypical cells could become a cancer over time or may increase a person’s risk of cancer.

This means no cancer cells were identified in your urine sample. Atypical. This indicates that some abnormalities were found in your urine sample cells, but they weren’t abnormal enough to be considered cancer. Suspicious. The urine cells were abnormal and might be cancerous.

Epithelial hyperplasia is most conspicuous within “atypical cysts” in which the lining cells are multilayered and occasionally papillary. These features were studied in the kidneys of 66 renal failure patients by means of multiple tissue blocks and serial histologic sections.

Most of the time, the abnormal cell changes are caused by certain types of human papillomavirus, or HPV. HPV is a sexually transmitted infection. Usually these cell changes go away on their own. But certain types of HPV have been linked to cervical cancer.

ATYPICAL SQUAMOUS PROLIFERATION – abnormal growth of squamous cells which could be cause by Squamous Cell Carcinoma or warts – can become Squamous Cell skin cancer.

ATYPICAL – a term indicating suspicious cells that could be cancer, but not confirmed as such. For instance, lymphomas (cancers of the lymph nodes) are notoriously difficult to diagnose. Some lymph node biopsies are very disturbing but do not quite fulfill the criteria for cancer.

A finding of abnormal cells in the tissue that lines the outer part of the cervix. Atypical squamous cells of undetermined significance is the most common abnormal finding in a Pap test.

Atypical lymphoid proliferations (AtLP) are conditions in which it is not possible to differentiate between the benign and the malignant nature of a given lymphoid infiltrate. AtLP are not necessarily premalignant and may very well represent a fully benign situation mimicking malignancy.

Atypical lymphocytes may be present in normal, healthy adults (6% to 12%) and at slightly higher numbers in children.

Lymphocytes normally represent 20% to 40% of circulating white blood cells. When the percentage of lymphocytes exceeds 40%, it is recognized as relative lymphocytosis….

Reactive, or atypical, lymphocytes are relatively fragile cells, and as a result can be squeezed out of shape by surrounding cells, giving them a scalloped appearance instead of a smooth cytoplasmic edge. The nucleus of the reactive lymphocyte is larger than that of the small lymphocyte, and is more irregular in shape.

If your doctor determines that your lymphocyte count is high, the test result might be evidence of one of the following conditions: Infection (bacterial, viral, other) Cancer of the blood or lymphatic system. An autoimmune disorder causing ongoing (chronic) inflammation.

Atypical lymphocytes are identified by their increased size, high metabolic activity, and the presence of additional DNA amount. Furthermore, in atypical lymphocytes, N:C ratio usually decreased, compared to normal lymphocytes.

Atypical lymphocytes have been observed in the peripheral blood of patients in a large number of clinical situations, including immune reactions to transplantation and immunization, collagen diseases and other autoimmune disorders, malignant disease, drug reactions, and infectious mononucleosis, as well as other …

Lymphocytes help fight off diseases, so it’s normal to see a temporary increase after an infection. A count significantly higher than 3,000 lymphocytes in a microliter of blood is generally considered to be lymphocytosis in adults. In children, the threshold for lymphocytosis varies with age.