[Granular cell tumor of the orbits. Diagnosis and therapy].

Report on two cases of tumours in the retroorbital space. The histological examination showed them to be granular cell myoblastomas (Abrikossoff), which in one case was bilateral. Tumours within the orbital space are rare. It is necessary in every case to make a biopsy to clarify the type of tumour because some of them are malignant. Computed tomography cannot differentiate between benign and malignant tumours in the orbita.