Μια προηγουμένως υγιής 46χρονη γυναίκα παρουσιάστηκε στο τμήμα μας με ιστορικό 6 μηνών ήπιας κεφαλαλγίας. Η ενδοκρανιακή υπολογιστική τομογραφία (CT) αποκάλυψε μια ισο-πυκνή μάζα χωρίς ασβεστοποίηση στην πρόσθια περιοχή του τρίτου κοιλώματος. Η μαγνητική τομογραφία (MRI) έδειξε ότι ο όγκος (διαμέτρου 14 × 18 × 18 mm) ήταν κυρίως ισο-πυκνός στην T1-βαρύτητα και στην T2-βαρύτητα, και ενισχυμένος ομοιογενώς σε μεγάλο βαθμό με το gadolinium (Gd) []. Το οπτικό χίασμα είχε μετατοπιστεί προς τα κάτω, και ο πρόσθιος τοίχος του τρίτου κοιλώματος ήταν εκκεντρικός. Το περιφερικό οίδημα που έφτανε μέχρι το μεσεγκέφαλο αμφίπλευρα και η εσωτερική κάψουλα που σχετιζόταν με συμπίεση από τον όγκο, ήταν σαφώς ορατά σε μαγνητική τομογραφία με αναστροφή της εξασθένισης του σήματος (FLAIR) []. Δεν υπήρχε ανεπάρκεια της υπόφυσης από εργαστηριακές εξετάσεις. Οι διαφορικές διαγνώσεις πριν από την επέμβαση περιλάμβαναν ενδοκρανιακή μηνιγγίωμα, κρανιοφαρυγγίωμα, εпенιδίωμα, και χορδώδες γλοίωμα του τρίτου κοιλώματος. Για να επιβεβαιωθεί η ιστολογική διάγνωση, ο όγκος αφαιρέθηκε μικροχειρουργικά κάτω από μια διημισφαιρική μετατραυματική προσέγγιση στο τρίτο κοιλώματος. Η ενδοεγχειρητική εξέταση έδειξε ότι ο όγκος ήταν σταθερός, ελαστικός, και μη απορροφήσιμος, και φαινόταν να προέρχεται από την λάμια τερμαλική με σαφή περιθώριο μεταξύ των φυσιολογικών δομών συμπεριλαμβανομένου του υποθαλάμου. Επιτύχαμε ολική εκτομή του όγκου για να μειώσουμε την συμπίεση του οπτικού νεύρου. Η ιστοπαθολογική εξέταση με χρώση με αιθοξυκίνη και εωσίνη (HE) του όγκου έδειξε ένα νεοπλασματικό ιστό που περιλάμβανε εωσινόφιλα επιθηλιακά κύτταρα με μεγάλους πυρήνες που ήταν διατεταγμένοι σε μικρά φύλλα, μέσα σε βλεννώδες στρώμα. Σπάνια λεμφοκυτταρική διήθηση ήταν παρούσα, και δεν ανιχνεύθηκε μιτογένεση [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] 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