Craniopharyngioma, light micrograph. Craniopharyngioma is a WHO Grade 1 epithelial tumour usually seen in the sellar/suprasellar region. It arises most likely from the remnants of Rathke's pouch. Some cases may have their origin in misplaced odontogenic rests along pituitary stalk. Grossly, they are often solid and cystic with areas of calcification. Craniopharyngiomas are subdivided into two types based on morphologic features: 1) Adamantinomatous (90% of cases) seen mostly in children and 2) Papillary (10% of cases) seen mostly in adults. The image shows adamantinomatous type. Microscopically, they are composed of well-differentiated squamous epithelium arranged in sheets, nodules, and anastomosing trabeculae with peripheral palisading. Within the nodules, the squamous cells often show whorl-like formation. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / WEBPATHOLOGY |
Bildgröße: | 4096 px × 3200 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |