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Locally vascularized pelvic accessory spleen

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Abstract

Polysplenism and accessory spleen are congenital, usually asymptomatic anomalies. A rare case of polysplenism with ectopic spleen in pelvis of a 67-year-old, Caucasian female is reported here. A transvaginal ultrasound found a soft well-defined homogeneous and vascularized mass in the left pelvis. Patient underwent MRI evaluation and contrast-CT abdominal scan: images with parenchymal aspect, similar to spleen were obtained. Abdominal scintigraphy with 99mTc-albumin nanocolloid was performed and pelvic region was studied with planar scans and SPECT. The results showed the presence of an uptake area of the radiopharmaceutical in the pelvis, while the spleen was normally visualized. These findings confirmed the presence of an accessory spleen with an artery originated from the aorta and a vein that joined with the superior mesenteric vein. To our knowledge, in the literature, there is just only one case of a true ectopic, locally vascularized spleen in the pelvis.

Riassunto

Il polisplenismo e la milza accessoria sono anomalie congenite generalmente asintomatiche. Riportiamo un raro caso di polisplenismo con milza pelvica ectopica in una donna bianca di 67 anni. Nella pelvi di sinistra all’ecografia transvaginale è stata ritrovata una massa soffice, ben definita, omogenea e vascolarizzata. La paziente è stata quindi sottoposta a valutazione con RM e TC addominale con contrasto: sono state ottenute immagini con aspetto parenchimale simile alla milza. E’ stata eseguita una scintigrafia addominale con albumina umana colloidale radiomarcata con tecnezio sulla regione pelvica con scansioni planari e SPECT. I risultati hanno mostrato la presenza di un’area di captazione del radiofarmaco nella pelvi, mentre la milza è stata normalmente visualizzata. Questi ritrovamenti hanno confermato la presenza di una milza accessoria con una arteria originante dall’aorta ed una vena che si anastomizzava con la vena mesenterica superiore. Alla nostra conoscenza, nella letteratura, esiste solo un caso di vera milza ectopica localmente vascolarizzata nella pelvi.

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Ethics committee approval was obtained before beginning any research involving human subjects or clinical information.

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All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2000. All patients provided written informed consent for enrolment in the study and for the inclusion in this article of information that could potentially lead to their identification.

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Correspondence to Francesco M. Drudi.

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Iorio, F., Frantellizzi, V., Drudi, F.M. et al. Locally vascularized pelvic accessory spleen. J Ultrasound 19, 141–144 (2016). https://doi.org/10.1007/s40477-015-0178-x

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  • DOI: https://doi.org/10.1007/s40477-015-0178-x

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