Macroscopic, mesoscopic and microscopic morphology of the gastric plexus - ontogeny of the celiac ganglion

Vol. 53 No. 3 Suppl., 2012
This supplement was not sponsored by Outside Organizations.

ROMANIAN JOURNAL of MORPHOLOGY and EMBRYOLOGY

Alina Maria Sisu, Loredana Gabriela Stana, Codruta Ileana Petrescu, A. Motoc

The vagus trunks, anterior and posterior, and their respective branches control the parasympathetic innervation of the stomach. After giving off a few thin branches, at the lower part of the esophagus and the cardiac region of the stomach, the anterior vagal trunk divides into its main branches: four or five consecutive direct branches which supply the upper part of the lesser curvature; these nerves do not form plexuses and thus, they may be individually dissected. One of the branches is stronger than the others and is called the principal anterior nerve of the lesser curvature (anterior nerve of Latarjet). The present study was conducted on eight fetuses of different gestational age (resulting from spontaneous abortions, without malformations), observing the Romanian laws of professional ethics, and 15 adult cadavers (male and female) whose celiac region was dissected macro- and mesoscopically to reveal both the celiac ganglia and their afferent and efferent vessels. For the microscopic study, we used the Bielschowsky silver staining method. The meso- and macroscopic dissections revealed the anterior and posterior vagal trunks in all the specimens (100%), as well as a rich gastric periarterial plexus. The microscopic samples focused on the ontogeny of the celiac ganglion in various gestational stages.

Corresponding author: Alina Maria Sisu, Assistant Professor, MD, PhD; e-mail: alinasisu@gmail.com

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ROMANIAN JOURNAL of MORPHOLOGY and EMBRYOLOGY

Georgiana Luminita Fota, A. Stepan, Raluca Niculina Ciurea

The identification of breast ductal carcinoma in situ (DCIS) is a factor that increases 8-10 times the risk of developing invasive ductal breast carcinoma (DCI) later. In this study, we evaluated the immunoexpression of the HER2/neu oncoprotein in the DCIS cases associated with DCI, both in situ and in the invasive components. We also studied the Her2/neu immunoreactivity in the cases of DCI having no DCIS association. The positive immunoreactivity (score 3) of the HER2/neu oncoprotein was present in 29 cases of high-grade DCIS having DCI associated, corresponding to the histological types comedo, solid, comedo/solid, and micropapillary. A weak-to-moderate complete membrane staining (score 2+) was determined in five high-grade DCIS and four intermediate-grade DCIS cases, belonging to the types comedo, solid, and micropapillary. The negative immunoreactivity of HER2/neu was identified in 18 cases, most of them being of low grade and belonging to the solid and cribriform types. The invasive component of the analyzed lesions indicated a HER2/neu positive reaction in 50% of lesions having DCI associated and 17.4% of the lesions having no DCIS association. The DCIS-DCI association and the DCIS histological types that were analyzed through the HER2/neu immunoexpression can stand as prognostic factors for the malignant breast lesions.

Corresponding author: Alex Stepan, University Assistant, MD, PhD; e-mail: astepan76@yahoo.com

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