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Hyperostosis frontalis interna (HFI), symmetric thickening of the inner table of the frontal bone, is relatively common in women but very rare in men. We report the case of an elderly male patient with HFI. This patient was accompanied by primary hypogonadism, which may be related to the underlying pathogenesis of HFI.
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The article describes a very severe case of hyperostosis of the frontal bone and discusses its possible differential diagnosis. What makes this case special is the fact that the osseous changes include all 3 layers of the bone. Macroscopically the lesion resembles an osteoma as described by Burkhardt (1970) and v. Eiselsberg (1906). The histological examination lead to the final diagnosis of hyperostosis frontalis interna. One must note that there were certain effects caused by a metastasis of a lobular carcinoma of the breast which influenced the osseous changes from the outer surface. The rough, spicula-like structure in the centre of the frontal squama should be put down to tumour erosion. The peripheral areas of the hyperostosis, however, still exhibit the original smoother texture of the disease. The final diagnosis in this unusual and possibly unique case was an intense hyperostosis frontalis interna with secondary changes due to the metastases of a lobular carcinoma of the breast.
The aim of this article is to present evidence of hyperostosis frontalis interna in a 40-year-old female recovered from a Meroitic cemetery (ca. 300 A.D.) in Sudanese Nubia. A review of the literature concerning the Morgagni-Stewart-Morel (MSM) syndrome suggests that the changes in the skull fragment are consistent with this diagnosis. This case is the earliest example of the condition so far reported, and therefore, in archaeological time and space, this is a disease not only of modern civilization, but also of antiquity. Current endocrinological reports suggest that the hyperostosis is the hallmark of a generalized disorder of bone metabolism, with increased androgens, prolactin, and somatotropins. Hyperostosis frontalis interna is the central feature of a syndrome first described over 200 years ago by the early pathologist Giovanni Batistta Morgagni, professor of anatomy at Padua (1719). He found thickening of the internal tables of the frontal bones in association with virilism and obesity. Stewart (1928) and Morel (1929) independently added several neuropsychiatric problems to this complex and questioned the possibility of an endocrine basis for the syndrome.
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A 74 year old patient, EW, with dorsolateral frontal cortical compression due to hyperostosis frontalis interna, in the absence of the Morgagni or Stewart-Morel syndromes, is described. In addition to conventional neuropsychological measures EW was administered one nonspatial and two spatial self ordered working memory tasks, as well as a standard measure of fluid intelligence or g. She showed impaired performance on all three self ordered working memory tasks compared with a normal control group of 10 subjects matched for age, education, sex, and IQ. By contrast, her performance on the fluid intelligence test was comparable with that of the controls. It is concluded that the compression of dorsolateral frontal cortex accompanying hyperostosis frontalis interna may produce selective cognitive impairment.
In a prospective study, hyperostosis frontalis interna (HFI) was found to be present in 49% of the subjects. The group included 259 nuns between the ages of 60 and 80. A prevalence of 84% of HFI was found in the obese subjects (greater than 40% over ideal body weight) whereas in the thin subjects HFI was found to be present in only 16%. The possible relationship between adipose tissue mass and HFI is discussed.
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The authors describe a rare case of coexistence of cerebral angioma with hyperostosis frontalis interna in a female patient aged 28 years, suffering from mental disturbances. The coexistence of these two diseases in one person caused considerable diagnostic and therapeutic difficulties. The described case points out that both these conditions may occur concomitantly. Another point of interest is the presence of hyperostosis frontalis interna in a young woman.
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It is striking that evidence for hyperostosis frontalis interna - a phenomenon of exclusive bilateral thickening of frontal endocranial surface - in archaeological samples is very rare in contrast to its modern prevalence. Because microevolutionary changes have been shown for various human characteristics any alteration of hormonal levels is very likely. Selection pressure was definitively higher in earlier times. This favoured prolonged alertness in order to access sufficient food, shorter feeling of satiety, lower level of fat metabolism, lower metabolic rates and, therefore, lower level of leptin - a 167 amino acid peptide mainly involved in human total body fat regulation. Its effects on bone metabolism are still debated. Nevertheless, we postulate the following hypothesis: In humans a decrease of selective pressure favoured an increased metabolic rate. This, being related to the higher level of leptin caused an increase of localized bony overgrowth like hyperostosis frontalis interna.
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The authors describe a case of atypical unilateral prominent hyperostosis frontalis interna in a 50-year-old Japanese woman with psychiatric symptoms. Radiological, computerized tomographic, operative, and histological findings of this rare case are presented.
The appearance of hyperostosis frontalis interna on an [111In]leukocyte scan is reported. Recognition of the potential for normal accumulation of 111In-labeled white blood cells within this common process involving the skull is necessary to avoid misdiagnosis.
Forty-six mentally ill women with radiologically verified hyperostosis frontalis interna (HFI) were compared with 46 matched mentally ill women without HFI in respect of mental morbidity among the full siblings of the two groups. It was found that mental morbidity was lower among the siblings on mentally ill women with HFI than among those of similar mentally ill women without HFI. A reasonable interpretation of these findings is that the combination mental illness-HFI is more often exogenously determined than other forms of mental illness.
Routine roentgenographic examination of the spine was performed in 690 patients with rheumatologic disorders. Ankylosing hyperostosis was discovered in 124 patients (18 percent). Roentgenograms of the skull revealed hyperostosis frontalis interna in 63 percent of cases, especially in female patients. No common pathogenic mechanism, however, has been discovered in these two disorders.