Adamantinoma of long bones is a rare neoplasm predominantly involving the t
ibia Cytogenetic studies of adamantinoma are few. Cytogenetic or molecular
cytogenetic analysis of four adamantinomas, and a review of eleven cases in
the literature reveals extra copies of chromosomes 7, 8, 12, 19, and 21 as
recurrent in this neoplasm. Adamantinoma may be confused with a variety of
primary and metastatic epithelial and mesenchymal neoplasms. Observation o
f these aneuploidies may be useful in establishing the diagnosis of adamant
inoma.