PubMed · 7294612
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
R Y Foos. 1981. Tapioca melanoma.. https://pubmed.ncbi.nlm.nih.gov/7294612/
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
PURPOSE: To report a case of retinoblastoma successfully treated by contact transscleral photocoagulation with a diode laser. METHODS: In an 18-month-old girl, a small (6.6 x 4.3 x 3.2-mm) discrete retinoblastoma anterior to the superotemporal arcade in the right eye was treated with transscleral photocoagulation using a diode laser (810 nm) and a fiberoptic probe. RESULTS: The tumor regressed after photocoagulation, leaving a pigmented chorioretinal scar. There was no regrowth of the tumor 12 months after photocoagulation. CONCLUSION: Contact transscleral photocoagulation with a diode laser may be a viable new treatment for small retinoblastoma.
BACKGROUND AND PURPOSE: The dose due to secondary neutrons and photons in proton therapy was estimated with Monte Carlo simulations. Three existing facilities treating eye and deep-seated tumours were taken into account. The results of the calculations related to eye proton therapy were verified with measurements. MATERIALS AND METHODS: The simulations were performed with the FLUKA code. Neutron fluence was measured inside an Alderson phantom (type ART) with activation techniques. RESULTS: The maximum dose due to secondaries produced in a passive beam delivery system was estimated to be of the order of 10(-4) and 10(-2) Gy per therapy Gy for eye and deep tumour treatments, respectively. In the case of irradiations of deep-seated tumours carried out with an active system, the dose was of the order of 10(-3) Gy per therapy Gy. CONCLUSIONS: The dose due to secondaries depends on the geometry of the beam delivery system and on the energy of the primary beam and is lower in the healthy tissues distant from the target volume.
A four months old child was referred for a rapidly growing recurrency of a tumor of the left eyebrow. The tumor was excised completely. The pathologic examination revealed an infantile myofibromatosis, most probably of the solitary type. The term "infantile myofibromatosis" summarizes a heterogenous group of rare fibromatoses in childhood, characterized by the proliferation of myofibroblasts. Isolated tumors have a fair prognosis after complete excision.