botryoid

The mass has a botryoid appearance of several combining structures.

Expression of myogenic regulating factors, myogenin and MyoD, in two canine botryoid rhabdomyosarcomas.

Botryoid odontogenic cyst (BOC) was first described in 1973 by Weathers and Waldron and it is usually described in the literature as a multicystic variant of lateral periodontal cyst (LPC) (1).

8, 9] Botryoid variant consists of cells varying from primitive small cells to cells with extensive myoblastic differentiation.

6,7) It is unclear if the favorable prognosis of both botryoid and spindle cell RMS in children relates to tumor site or a unique biology.

Polycystic lesions are called botryoid odontogenic cysts, due to their resemblance to a cluster of grapes.

1) Two major types have been described: adult-pleomorphic and juvenile, which consists of elements of alveolar, embryonal, and botryoid with 1 element usually predominating.

4) In 1958, Horn and Enterline published the most useful classification of rhabdomyosarcomas; they classified them as pleomorphic, alveolar, embryonal, and botryoid.

The splenic outline was botryoid, with foci of small white nodules visible in the dark red parenchyma (diameter [less than] 1 to occasionally 3 mm).

Characteristic botryoid inclusions were detected in more vaccinated than control pigeons, but this difference was not significant.

A rare variant of lateral periodontal cyst, the botryoid cysts represent a polycystic variant of LPC, first described in 1973 by Weathers and Waldron.

The tumor shows a botryoid growth pattern into the lumen of the bile duct.

In 1995, the Intergroup Rhabdomyosarcoma Study proposed the "International Classification of Rhabdomyosarcoma," in which 4 main subtypes of RMS were established: 1) botryoid and spindle cell variants of embryonal rhabdomyosarcoma (ERMS) with a favorable prognosis; 2) conventional ERMS with an intermediate prognosis; 3) alveolar rhabdomyosarcoma (ARMS) with a poor prognosis; and 4) undifferentiated sarcomas, also with a poor prognosis5.

Botryoid rhabdomyosarcoma is the most common malignant tumor of the extrahepatic bile ducts in children, (28) but rare cases have also been reported in adults.

Botryoid variety is seen in genitourinary tract of young children.