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nondiagnostic and surgical biopsy was further indicated. Out of 17 FNA with

concurrent core biopsies, 12 were proved to be carcinoma (1 lobular Ca, 11 ductal
Ca) and 5 were fibroadenomas or negative for malignancy. Hook-wire was placed in
14 lesions either for surgical biopsy (4)pr lumpectomy (10). Eight cystic lesions

underwent fluid aspiration and evacuation and the cytology results were negative for

malignancy.

Conclusion: Ultrasound-guided interventional procedures are minimally invasive and
contribute significantly to the accurate diagnosis and management of focal breast

lesions obviating unnecessary breast operations for benign lesions.

6. A quick calculation of predicted death rate of APACHE-II system in patients with
moderate head injuries

Georgios Matis, Theodossios Birbilis, Olga Chrysou, Kosmas Kontogiannidis, Elena
Karakosta, Athanassios Zissimopoulos, Michail Karanikas, Nikolaos Lyratzopoulos,

Georgios Minopoulos.

Ανακοινώθηκε στο 14 European Congress of Neurosurgery (EANS), Rome, Italy,
th
0914/10/2011).

Δημοσιεύτηκε σαν E-Poster 247

http://www.multiwebcast.com/eans/2011/14th/10025/#show10025_29833

Abstract

Introduction: The APACHE-II (Acute Physi- ology and Chronic Health Eval- uation-II)

is a severity of dis- ease classification system. It is calculated from 12 physiolog- ical
variables during the first 24 hours after admission, age and previous health status. It

is used for predicting mortali- ty in patients with head injuries (HI) using the principal
diagno- sis leading to ICU admission as a category weight.

Objective: To assess if the diagnostic cat- egory weight and the perfor- mance of

operation in patients with moderate HI affects the predicted death rate (R).

Materials & Methods: Thirteen patients admitted to the ICU of the University Gen- eral

Hospital of Alexandroupo- lis (Greece) (1994-2003) with “moderate HI” (GCS 9-13).
First, R was computed with the conventional (R_Original) and the modified way
(R_Modified). Then, the paired samples t- test for the 2 rates was em- ployed. Validity

was tested with discrimination (ROCs) and cal- ibration (Hosmer-Lemeshow test).

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