Mar. 30, 2023
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Left schematic drawing and right histological sagittal paraffin section of a tissue block from the sella turcica region in a human fetus with hypertelorism and nasal malformation. Anterior direction is left. Note the absence of a normal sella turcica morphology and the presence of a broad canal in the cranial base between the cartilage primordium of the sphenoid bone (left) and the occipital bone (right). Adenopituitary gland tissue appears as a polyp-like cell mass extending from the pharyngeal mucosa into the pharyngeal cavity. No neurohypophysis is seen. Toluidine blue. (Reproduced with permission. J Craniofac Genet Dev Biol 1995;15:222-9.)