Galván, L. (Luis)
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- Assessment of cyst content using mean gray value for discriminating endometrioma from other unilocular cysts in premenopausal women(Wiley-Blackwell, 2010) Galván, L. (Luis); Alcazar, J.L. (Juan Luis); Guerriero, S. (Stefano); Leon, M. (M.)Objective To assess whether the analysis of cyst content using mean gray value (MGV) can discriminate ovarian endometriomas from other unilocular ovarian cysts in premenopausal women. Methods Stored three-dimensional (3D) volumes from 54 unilocular ovarian cysts diagnosed in 50 premenopausal women (mean age, 37 (range, 22–50) years) were analyzed to calculate the MGV from cyst content. Cysts with solid components or septations were excluded. MGV was calculated in all cases with the Virtual Organ Computer-aided AnaLysisTM technique. The Bmode presumptive diagnosis based on the examiner’s subjective impression was also recorded. Results Sixteen of the cysts resolved spontaneously and were given a final clinical diagnosis of hemorrhagic functional cyst, while 38 cysts were removed surgically (diagnosed histologically as seven simple cysts, three hemorrhagic cysts, 20 endometriomas, five mucinous cysts and three paraovarian cysts). B-mode diagnoses were as follows: seven simple cysts, 18 hemorrhagic cysts, 24 endometriomas, three mucinous cysts and two paraovarian cysts. MGV was significantly higher in ovarian endometrioma when compared with all other kinds of cyst. The receiver–operating characteristics curve showed that using an MGV cut-off ≥15.560 had a sensitivity of 85% and a specificity of 76.5% for diagnosing ovarian endometrioma (area under the curve, 0.831; 95% CI, 0.718–0.944). These figures were similar to those for B-mode diagnosis (sensitivity, 90%; specificity, 82%) (McNemar test, P = 1.000). Combining B-mode and MGV gave a sensitivity of 80% and a specificity of 91%. Conclusion Cyst content MGV is higher in ovarian endometrioma than it is in other unilocular ovarian cysts. The diagnostic performance of MGV is similar to that of the examiner’s subjective impression. The combination of both criteria achieves the highest specificity
- Llamados y escogidos(GRISO-Universidad de Navarra, 2002) Arellano-Ayuso, I. (Ignacio); Galván, L. (Luis); Calderón-de-la-Barca, P. (Pedro)
- Organic composition or ut pictura poesis? ΖΩΙΟΝ in Aristotele’s poetics(Cambridge University Press, 2024) Galván, L. (Luis)This paper discusses Aristotle’s references to a ζῷον in his Poetics (1450b34–51a4 and 1459a20) and evaluates their implications. The usual interpretation, ‘living creature’ or ‘animal’, is one-sided, because the word ζῷον is Aristotle’s paradigm of homonymy, applying as it does to both the human being and the drawing (Cat. 1a1–6). After an examination of the two passages containing such references and their contexts, other passages by Aristotle and earlier writers (Plato, Alcidamas and Gorgias) that may shed light on the issue are analysed. The conclusion reflects on the relevance of the interpretation as ‘figure’ for the premises and purpose of the Poetics.