Table 1: Tumour histological subtype and location of primary.

Tumour/Location of primary Number of Cases
Squamous cell carcinoma
Skin
Forehead 6
Eyelid 3
Unknown 1
Sinus
Ethmoid 1
Maxillary 1
Basal cell carcinoma
Skin 1
Malignant melanoma
Sinus
Ethmoid 1
Maxillary 1
Blue cell naevus 1
Adenoid cystic carcinoma of the maxillary sinus 1
Sebaceous cell carcinoma of the upper eyelid 1
Salivary duct carcinoma 1
Adenocarcinoma 1