Cilindrata (from the Greek. kylindros - cylinder) - a kind of epithelial tumor with a tendency to mestnoanesteziruyuschee growth, multiple relapses and malignancy. It is better to name this tumor cylindrotoma adenoma or carcinoma. It is to be distinguished from cylindrem skin, which always benign.
Cilindrata can occur at any age, usually after 40 years, and may be localized in hard or soft palate, salivary glands, the root of tongue, upper respiratory tract, orbit, developing of Muco-serous glands.
The tumor usually single, looks grayish-white or yellowish node thick consistency are not clearly separated from the surrounding tissues.
Microscopically of cilindrata has lobed structure and consists of small basophilic cells with dark nuclei, forming gland, tubes, bands, kriposny (lace) structures and solid areas (Fig. 1). Typical for cylindrem are homogeneous hyaline or eliseogene mass that fills advanced cancer and tubes and forming cylinders resembling protein cylinders in the tubules of the kidney that was the basis for the name of the tumor. There are also performed hyaline masses large cystic cavities. The mitoses in tumors are rare.
Malignant cylindrem microscopically characterized by a predominance solid cellular field and distribution of complexes of tumor cells by perineurally the cracks. Spreads of cilindrata more often in the lungs, liver, less often in the lymph nodes. The structure of tumor metastases same as in the main site.
The growth of cylindrem initially slow. Clinically sometimes there is pain (unlike painless mixed tumors).
The diagnosis can be established only by histological examination.
Treatment cylindrem surgery in combination with radiation.

cilindrata soft palate
Fig. 1. Cilindrata soft palate.