[The imaging diagnosis of a rare case of inflammatory pseudotumor of the spleen].
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M Bazzocchi
Publications and source records attributed to M Bazzocchi.
Percutaneous large core needle biopsy versus surgical biopsy in the diagnosis of breast lesions.
OBJECTIVE: To value LCNB accuracy in the determination of morphobiological parameters and as an alternative to the open SB diagnostic procedure of breast lesions. SETTING: University Hospital, Italy. SUBJECTS: From May 1992 to February 1995 196 biopsies have been performed. The diameter of the neoplasms examined varied from 0.6 to 7 cm with an average of 1.9 cm. MAIN OUTCOME MEASURES: The accuracy of the two methods in the evaluation of histological degree, receptor state, protein c-erb B2 and p53 were compared. RESULTS: No inadequate sampling were ever recorded. LCNB has shown values of 97% sensitivity and 100% specificity. The positivity and negativity predicted values obtained were 100% and 89% respectively. Retrospectively 70 sample-cases of carcinoma were selected and the morphobiological parameters evaluated. The correlation coefficients for the data obtained with SB and LCNB in the evaluation of Progesteron and Oestrogen receptor expression, protein c-erb B2 and p53 were excellent. Furthermore it was noted that LCNB allows a saving of at least 1/3 of the cost vs intraoperative SB. CONCLUSIONS: Percutaneous LCNB has high diagnostic accuracy for histological classification. LCNB has the same accuracy as SB for morphobiological parameters. The cost of LCNB is markedly lower than SB.
Adult↗
[Magnetic resonance of the elbow: technique optimization and definitions of normal anatomical features and their variations].
INTRODUCTION: MRI is a very accurate technique to study the elbow joint, tendon, ligament and chondral structures. In the last years elbow disorders were described by several MR investigators, while we studied MR capabilities in depicting normal elbow anatomy. This investigation might permit the correct differentiation of normal from abnormal MR patterns. MATERIAL AND METHODS: Eleven healthy volunteers (6 men and 5 women, mean age: 27.5 years) were examined. All studies were performed on a 1.5 T imager (Magnetom SP 4000) with two types of receiver: the knee coil was used in 7 volunteers examined in the prone position, with the arm above their head, the elbow extended and the forearm supine and the shoulder coil was used in 4 volunteers examined in the prone position, with the arm above their head, the elbow flexed and the forearm prone. We acquired T1-weighted SE sequences (TR/TE = 690/15 ms, FA 90 degrees, MA 256 x 512, NEX 2,20 3-mm sections with .3-mm interslice gap, FOV 20-22 cm) on the axial, coronal and sagittal planes and T2-weighted GE sequences (TR/TE = 450/10 ms, MA 256 x 256, 3 NEX, 18 4-mm sections with .4-mm interslice gap, FOV 13-18 cm) on the coronal plane. Two MR-expert radiologists studied the images and identified the main anatomical structures of the elbow and 12 smaller reference elements (2 anatomical variants, 4 ligaments, 3 nerves and 3 arteries) describing their MR appearance and pointing out the most effective planes for their representation. Finally, the image quality of the knee coil was compared with that of the shoulder coil. RESULTS: All bones were clearly depicted on the coronal and axial planes, while the semilunar groove and its anatomical variants were best seen on the sagittal plane. The joint cartilage was best depicted on the coronal plane with T2-weighted GE sequences. Collateral ligaments were best seen with the elbow extended and the forearm supine (knee coil), on coronal T1-weighted SE images, where the radial and ulnar collateral ligaments were visible in 71.4% and 85.7% of the subjects, respectively. Annular ligaments, muscles and tendons were best demonstrated on the axial plane with the elbow extended and the forearm supine (knee coil), while the triceps tendon was best recognized on the sagittal plane with the elbow flexed and the forearm prone (shoulder coil). Vessels and nerves were also best seen on the axial plane with the elbow extended and the forearm supine; in particular, the median nerve was visible in 71.4% of the subjects. DISCUSSION AND CONCLUSION: MRI is very effective in representing elbow anatomical structures. Its accuracy depends on elbow (flexed or extended) and forearm (prone or supine) position. The coronal images with the elbow extended and the forearm supine (knee coil) are the most effective to show the ligaments and the joint surfaces between the radial head and the coronoid process of ulna with the capitellum and trochlea of distal humerus, while the axial images best depicted the muscles, vessels and nerves. The coronal and axial planes, with the elbow flexed and the forearm prone (shoulder coil) are poorly effective for anatomical detailing, even though this position is more comfortable for the patient, while the sagittal plane is best suited to depict the triceps tendon. This position may be used when the elbow cannot be fully extended or when the triceps tendon is studied.
Adult↗