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A case of "cryptogenetic osteolysis of the mandible" is reported. This is a rare affection as only 13 cases of "phantom mandible" are known, but other sites exist (91 cases of phantom bone are known). The diagnosis is suspected after radiography, and confirmed by anatomopathological examination. No treatment for this affection has been described.
Chronic frontal sinusitis and osteolysis in a herd of desert bighorn sheep (Ovis canadensis nelsoni) in Zion National Park, Utah, was attributed to bacterial infection secondary to aberrant nasal bot migration. Analysis of skulls and live adult sheep (equal to 1 year old) showed that 9 to 22 animals were affected. One ram and 1 ewe were treated by trephination and irrigation. Treatment was successful for the ewe, but not for the ram. Radiography, thermography, and blood profiles were used in an attempt to find a way to diagnose sinusitis in its early stages; at this point, only thermography shows promise.
The neuro-cutaneo-osseous syndrome of "sporadic" acrosteolysis (of Bureau-Barrière), localized to the ends of the feet, has occasionally been seen in workers engaged in the polymerization of vinyl chloride, A case of the disease is described in a 42-year-old worker exposed to different vapours during the manufacture of plastic products, but he had never worked with vinyl chloride. Outstanding signs were dysproteinaemia, moderate thrombocytopenia, while symptoms of Raynaud's disease as well as scleroderma-like changes in hands and feet (typical of vinyl chloride disease) were absent. The onset of the osteolytic and ulcerative process corresponded to prolonged exposure to cold on the job. It is, therefore, assumed that there was concealed chronic intoxication with synthetic vapours which, in connection with cold exposure and other individual factors, may have aided in the manifestation of the disease. It is possible that under certain conditions synthetics other than vinyl chloride may contribute to the occurrence of sporadic cases of acro-osteolysis.
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Four patients affected by chronic myeloid leukemia who developed osteolytic lesions in the course of the disease are described. According to the literature, the appearance of these alterations seems to signify an unfavorable prognosis, since they occur slightly before or even at the same time as the blastic transformation of the disease. However, in one case bone biopsy showed a metastasis of a solid tumor, emphasizing the importance of this procedure in order to give a more precise clinical evaluation, both diagnostic and therapeutic.
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