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Considering the changes in moral principles, human behavior and behavioral values through the ages, in Egill Skallagrimsson's Saga, Egill presents us with altered mental status. This is in terms of what at present is considered symptoms of an anti-social personality, and bipolar affective disorder. Egill Skallagrimsson is considered one of the most famous Vikings in the Icelandic Sagas. Archaeological findings mentioned in Egill's Saga indicate disfigurement of his skull, which has led many authors to suggest that Egill suffered from skeletal dysplasia. The primary assumption in the literature is that Egill Skallagrimsson was affected by Paget's disease of bone. This consideration is additionally based on the scholar's interpretation of the Saga text. The unique storytelling style in the Saga of Egill Skallagrimsson is evident; however, the question of the story's truthfulness remains open. In this article, we investigate Egill Skallagrimsson's assumed Paget's disease of bone, based on the physical and mental symptoms disclosed in the Saga of Egill Skallagrimsson. Associated with the assumption, the author's hermeneutics of Egill's Saga in the context of modern-day knowledge of Paget's disease of bone, brings forward the probability estimate to the range of permille. In Scandinavian folklore and mythology, a tale by Saxo Grammaticus of a notorious shield-maiden named Visna, reminds of Egill, as noted by Snorri Sturluson. Hence, in reference to Egill Skallagrimsson's mental status and physical appearance as listed in Egill's Saga, the authors recommend the name for his condition to be "Visna of Egill Skallagrimsson".

The annual incidence of pelvic endometriosis among women aged 15-49 years and up to age 69 years was ascertained for the Icelandic population between 1981 and 2000 by using Iceland's extensive record linkage systems. Comprehensive, state-financed health care and unique personal identification numbers enabled care to be tracked from first diagnosis. To identify cases, a centralized discharge-code registry was searched, as well as all hospital databases and, for individual patients, all hospital records. Each case of visually diagnosed and histologically verified endometriosis was cross-checked against the nationwide pathology registry. The revised American Society for Reproductive Medicine classification system was used for staging. Recorded was type of operation at diagnosis and presence of disease at 5 sites: deep pelvis, appendages, central pelvis, vesicouterine pouch, and ovaries. A total of 1,383 women were diagnosed surgically, with histologic verification of 811 (58.6%). All but 6 cases could be staged; 297 (36.9%) had minimal/mild and 508 (63.1%) had moderate/severe disease. The estimates of crude annual incidence were 0.1% for visually confirmed and 0.06% for histologically verified endometriosis, and respective age-standardized annual incidence was 0.1% and 0.05% for women aged 15-49 years. The most common site was the ovary, followed by deep pelvis, central pelvis, appendages, and vesicouterine pouch.

Objective: To investigate quantitative aberrations involving p53 copy numbers in eutopic endometrial and endometriotic tissue from two populations., Design: Comparative analysis of normal and diseased tissue., Setting: Tissue specimens collected in Iceland and USA., Patient(s): Subjects with moderate/severe endometriosis (Iceland, n = 26; USA, n = 45). Paraffin-embedded tissue from 19 matched Icelandic cases and seven unaffected controls. American cases were fresh surgical tissue from 17 matched cases and 28 unaffected controls. DNA isolation and real-time polymerase chain reaction (PCR) with TaqMan assay were performed., Main Outcome Measure(s): The frequency of p53 loss and/or gain based on quantitative differences for copy numbers of p53 located on chromosome (17p) and GAPDH on a control locus (chromosome 12p)., Result(s): Among American cases, significant p53 gain (n = 13) or loss (n = 4) was observed in 17 of 21 cases. In Icelandic cases this was not seen to the same degree. Mean normalized p53 values were 3.46 and 1.16 copies per reaction, respectively. Significant differences were observed between normalized p53 in the control blood and affected tissue for the American and Icelandic cases compared to standard GAPDH control but not in normal Icelandic and American endometrium., Conclusion(s): The results continue to support a role for nonrandom somatic p53 locus alterations in the pathogenesis of late or severe-stage endometriosis. Differences between Icelandic and American subjects have implications for generalization of genome-wide approaches.