TABLE 1:

Pituitary duplications

	Case 1	Case 2	Case 3	Case 4	Case 5
Sex, age	Male, 1 year	Female, 2 days	Female, 1 day	Female, 28 weeks’ gestation	Female, 2 days
Clinical presentation	Macrocephaly, mild facial dysmorphism, developmental delay	Protruding whitish mass from oral cavity	Craniofacial deformity	Prematurity, hydrocephalus with intraventricular hemorrhage on ultrasonogram	Suspected choanal atresia
Pituitary gland, duplicated pituitary and stalk	Yes	Yes	Yes	Yes	Yes
Hypothalamic thickening and tubomammillary fusion	Yes	Yes	Yes	Yes	Yes
Duplicated pituitary fossae and cleft basisphenoid	Yes	Yes	Yes	Yes	Yes
Sphenopharyngeal canal	No	Yes	No	Yes	No
Hypertelorism	Yes	Yes	Yes	Yes	No
Corpus callosum	Normal	Agenesis	Agenesis	Agenesis	Normal
Mouth and nasopharynx	Normal	Cleft palate, oral dermoid, frontonasal dysplasia	Jaw teratoma, syngnathia, sphenomandibular-maxillary fusion, cleft palate	Cleft palate	Oral “hairy” dermoid, posterior cleft through bony palate
Posterior fossa	Wide pons, prominent ventral raphe	Normal	Normal	Lower brain stem tethered anteriorly to pharynx through cleft above anterior arch of C1 with basion	Lower brain stem tethered anteriorly to pharynx through cleft above anterior arch of C1 with basion
Basilar artery	Duplicated, MR angiogram available	Duplicated, only spin-echo images available	Duplicated, only spin-echo images available	Duplicated, MR angiogram available	Duplicated, MR angiogram available
Cervical spine anomalies/anomalies of basion	Yes	Yes	Yes	Yes	Yes