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Gastrointestinal motility symptoms may be closely related to thyroid diseases. Sometimes, such symptoms are the only thyroid disease-related clue although the degree of the symptoms may vary. The exact mechanism of action of thyroid hormones on gastrointestinal motility is not completely understood, however, a clue lies in the fact that muscle cell receptors can be directly acted upon by thyroxines. Both hypo- and hyperthyroidism can cause impairment of gastrointestinal motility, modifying structure and function of pharynx and esophagus, and regulating esophageal peristalsis through neuro-humoral interaction. In hyperthyroid patients, alterations of postprandial and basic electric rhythms have been observed at gastro-duodenal level, often resulting in slower gastric emptying. Gastric emptying may also be delayed in hypothyroidism, but an unrelated gastric mucosa-affecting chronic modification may also cause such pattern. Hyperthyroidism commonly show malabsorption and diarrhoea, while hypothyroidism frequently show constipation. In summary, it can be stated that symptoms of gastrointestinal motility dysfunction can be related to thyroid diseases, affecting any of the gastrointestinal segment. Clinically, the typical thyroid disease manifestations may be missing, borderline, or concealed because of intercurrent sicknesses. Motility-linked gastrointestinal problems may easily conceal a misdetected, underlying dysthyroidism that should be carefully analyzed. Here, we aim to elaborate on the associations between thyroid disorders and GI dysmotility and the common clinical manifestations associated with GI dysmotility. [ABSTRACT FROM AUTHOR]

Juxtaglomerular cell tumor (JCT) is an endocrine tumor marked by elevated renin levels and high blood pressure. This case report presents the clinical findings of a 47-year-old woman with a history of recurrent hypokalemia, headaches, hypertension, and increased plasma renin activity (PRA). Dynamic enhanced magnetic resonance imaging (MRI) revealed a small nodule on the upper part of the right kidney. Selective renal venous sampling indicated a higher PRA only in the right upper pole renal vein. The patient underwent surgical removal of the right kidney mass, and the pathology results confirmed the diagnosis of JCT. This case underscores the importance of conducting selective renal venous sampling for accurate JCT diagnosis. [ABSTRACT FROM AUTHOR]

The 2s inner shell photoionization (PI) of Na and Auger decay of 1[s.sup.2]2s2[p.sup.6]3s state in Na+ were investigated using single-configuration and multiconfiguration (MC) approximation methods. The PI cross sections from MC calculations showed excellent agreement with experimental and previous theoretical values. The configuration interaction between 1[s.sup.2]2s2[p.sup.6]3s and 1[s.sup.2]2s2[p.sup.6]4s states was essential in predicting PI cross sections. Moreover, configuration interaction played a prominent role in determination of the Auger lifetime widths of [Na.sup.+] 1[s.sup.2]2s2[p.sup.6]3s ([sup.1][S.sub.0]) compared with the experiment. Key words: photoionization, Auger decay, lifetime width, configuration interaction, multiconfiguration Dirac-Fork. Utilisant les methodes approximatives a configuration simple et multi- configurations (MC), nous etudions la photoionisation (PI) dans la couche interne 2s du Na et la desintegration Auger de l'etat 1[s.sup.2]2s2[p.sup.6]3s dans le [Na.sup.+]. Les sections efficaces PI obtenues des calculs MC montrent un excellent accord avec les valeurs experimentales et avec d'autres calculs theoriques. L'interaction de configuration entre les etats 1[s.sup.2]2s2[p.sup.6]3s et 1[s.sup.2]2s2[p.sup.6]4s est essentielle pour predire correctement les sections efficaces PI. De plus, l'interaction de configuration joue un role capital dans la determination des largeurs de temps de vie Auger de 1[s.sup.2]2s2[p.sup.6]3s ([sup.1][S.sub.0]) dans une comparaison avec l'experience. [Traduit par la Redaction] Mots-cles: desintegration Auger, photo-ionisation, largeur de temps de vie, interaction de configuration, methode Dirac-Fock multi-configurations., 1. Introduction Photoionzation (PI) cross sections are needed in modeling laboratory and astrophysical plasmas [1]. PI of atomic ions is an important process in determining the ionization balance and abundances [...]