Details

Autor(en) / Beteiligte

• Catão-Dias, J.L.
• Nichols, D.K.

Titel

Neoplasia In Snakes At The National Zoological Park, Washington, DC (1978–1997)

Ist Teil von

• Journal of comparative pathology, 1999-01, Vol.120 (1), p.89-95

Ort / Verlag

England: Elsevier Ltd

Erscheinungsjahr

1999

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• Of 291 juvenile and adult snakes examinedpost mortemover a 20-year period (1978–1997) at the National Zoological Park (NZP) in Washington, DC, 36 (24 females and 12 males) had neoplasms. Two snakes had tumours of two or three different types, but the other 34 snakes had only one type. All affected animals were adults and their average time on exhibit at the NZP was 108·9 months. Malignant neoplasms (79·5%) outnumbered benign neoplasms (20·5%). Of the malignant tumours, 19 (61·3%) were considered to have arisen in mesenchymal tissues, 11 (35·5%) were of epithelial origin, and one (3·2%) was derived from neuroectodermal tissues. All the benign neoplasms were of epithelial origin. Neoplasms of the lymphoid and haematopoietic tissues were the most common (12 cases), followed by tumours of the liver and biliary tract (seven cases) and the gastrointestinal tract (four cases).