Cystic Shape Cemento-Ossifying Fibroma of Ethmoid Sinus.

Cemento-ossifying fibromas are a group of rarely occurring benign tumours, developing from the periodontal membrane and varying considerably in appearance and in the progress of the disease. Their common feature is higher or lower production of cemental tissue. In most cases the tumours are small because their cementoma mature quickly and become inactive, which causes the tumour to stop growing. They develop most frequently in the mandible and also in the maxilla. Other sites, such as paranasal cavities, soft tissues and bones of the head, are extremely rare. The case of a cemento-fibrosing tumour with psammoma infiltrations, developing from the ethmoid sinus in a nine-year-old girl is reported. Due to frontal headaches and sight defects as well as impaired vision on the right side, NMR was done, which showed a mucocele of the front and rear ethmoid with destruction of the orbital wall and a breakthrough into the orbit. The right maxillary sinus showed a visible retention and a thickened mucous membrane. A rhinoscopy revealed a ball-shaped spherical mass in the medial nasal meatus, which was defined as concha bullosa. An endoscopic examination showed that the tumour protruded in front of the medium nasal concha into the right nasal cavity, softened the ethmoid roof, penetrated toward the base of the skull, adhered and pushed the orbit. It was removed by FESS technique, and PHD revealed subsequently that it was not a mucocele but a cemento-ossifying fibroma.

Giant congenital nevus with plexiform neurofibroma and malignant peripheral nerve sheath tumor.

A female patient with a giant congenital nevus associated with plexiform neurinoma and malignant peripheral nerve sheath tumor (MPNST) on head and neck is presented. We theoretically discuss possibilities of mutual origin all three entities, including the Boland theory of neurochristopaty. The clinical, surgical, and histologic aspects of the disease are discussed. Only one similar case in written literature was described.

Thermography-measured effect of capsaicin, methylprednisolone and mitomycin on the survival of random skin flaps in rats.

AIMS: This study was designed to determine if steroids, capsaicin and mitomycin improved skin flap survival in rats, and it has confirmed that thermography is an effective method to measured skin flap vitality. METHODS: Forty female Wistar rats were randomised into four groups. A standardised full thickness inferiorly based dorsal random-pattern skin flap was raised, and a gelatine sponge was placed before suturing between the flap and its recipient bed, soaked with 0.9 % saline in the control group and with capsaicin, methylprednisolone and mitomycin in the experimental groups. Vitality of the flap and of the survival area was measured by infrared thermography. RESULTS: Methylprednisolone statistically significant decrease skin flap necrosis, approximately 56%, when compared with controls (P< 0.05). CONCLUSION: Corticosteroids applied subcutaneously in a single dose on a gelatine sponge produced a statistically significant improvement of the survival of random skin flaps in rats, whereas capsaicin and mitomycin showed no improvement.