koilocytosis


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koi·lo·cy·to·sis

(koy'lō-sī-tō'sis),
Perinuclear vacuolation.
See also: koilocyte.
[G. koilos, hollow, + kytos, cell, + -osis, condition]

koilocytosis

/koi·lo·cy·to·sis/ (koi″lo-si-to´sis) the presence of abnormal koilocytes that are vacuolated with clear cytoplasm or perinuclear halos and nuclear pyknosis.koilocytot´ic

koi·lo·cy·to·sis

(koy'lō-sī-tō'sis)
Perinuclear vacuolation.
See also: koilocyte

koilocytosis

The appearance of spaces (vacuoles) in cells. Cervical or dermal epithelial koilocytosis is characteristic of infection with the human papillomavirus.

koi·lo·cy·to·sis

(koy'lō-sī-tō'sis)
Perinuclear vacuolation.

koilocytosis

(koil´əsītō´sis),
n a histologic feature of the mucosal changes associated with the intraoral use of smokeless tobacco. The spinous cells of the squamous epithelium present with pyknotic, irregularly shaped nuclei surrounded by a perinuclear clear zone.

koilocytosis

ballooning degeneration.
References in periodicals archive ?
Regardless of location or associated HPV type, these lesions are typically lined by an acanthotic squamous epithelium with other obvious changes associated with verrucous lesions, which include hypergranulosis, with large, dense, coalescing keratohyaline granules, and occasional koilocytosis.
Diagnosis Normal, CIN I, HPV status missing, n n (a) n Histopathology RDBH /MS 0 34 36 RDBH /MS 0 49 14 RDBH /MS 0 0 0 RDBH /MS 0 2 2 Cytology RDBH /MS 7 21 11 RDBH /MS 6 187 5 RDBH /MS 0 0 0 RDBH /MS 0 1 1 CIN II, CIN III, Cancer, HPV status n n n Histopathology RDBH /MS 42 59 3 (b) RDBH /MS 8 2 0 RDBH /MS 0 0 0 RDBH /MS 0 1 1 (c) Cytology RDBH /MS 5 2 0 RDBH /MS 3 0 0 RDBH /MS 0 0 0 RDBH /MS 0 0 0 (a) Including the cytologic diagnosis koilocytosis ("signs of HPV infection").
Koilocytosis (wrinkled, hyperchromatic nuclei surrounded by a cleared halo in cells with a well-defined cell border) is characteristic of SP (figure, B).
The microsection of the skin of the animal group treated with bleomycin after exposure to UV B radiation for 20 days shows focal koilocytosis in epidermis and mild fibrosis was seen in dermis.
The normal epithelium is replaced by markedly pleomorphic cells showing prominent koilocytosis.
Histologic features include hyperkeratosis, papillomatosis, acanthosis, and squamous cell differentiation without koilocytosis.
But true koilocytosis is often focal, whereas in normal epithelium there is no clear demarcation between abnormal and normal-appearing epithelium.