Use of quantitative ultrasound of the hand phalanges in the diagnosis of two different osteoporotic syndromes: Cushing's syndrome and postmenopausal osteoporosis.
The aim of this study was to assess the ability of the quantitative ultrasound of the hand phalanges to detect different types of osteoporosis resulting from different pathogenetic mechanisms. For this purpose, postmenopausal and glucocorticoid-induced osteoporosis was studied. Thirteen female patients with Cushing's syndrome (CS) resulting from pituitary-dependent bilateral adrenal hyperplasia (10 patients) and from adrenal adenoma (3 patients), and 32 postmenopausal osteoporotic (OP) women, were examined. The two groups of patients were comparable for body mass index (BMI), but CS patients were significantly younger than OP ones (CS 44.5+/-11.6; OP: 73.9+/-3.6). All the patients had femoral neck bone mineral density (BMD) T-score less than -2.0. Cushing patients had a femoral neck BMD similar to that of OP patients (CS: 603+/-66 mg/cm2; OP: 628+/-69 mg/cm2; p=0.19). In contrast, amplitude-dependent speed of sound (AD-SoS) was significantly higher in CS patients than in OP patients (CS: 1997+/-91 m/s; OP: 1707+/-114 m/s; p<0.0001). By adjusting DXA and ultrasound parameters according to age, femoral neck BMD was significantly lower in CS patients and AD-SoS remained significantly higher than in OP patients. These findings indicate that these two different kinds of osteoporosis can be distinguished by ultrasonography and that ultrasound parameters alone cannot be used for evaluating skeletal status in CS patients.
Camozzi
V
V
Department of Medical and Surgical Sciences, University Hospital of Padua, Padua, Italy.
Carraro
V
V
Zangari
M
M
Fallo
F
F
Mantero
F
F
Luisetto
G
G
D000236:Adenoma / Q000150:complications; D000310:Adrenal Gland Neoplasms / Q000150:complications; D000312:Adrenal Hyperplasia, Congenital / Q000150:complications; D000328:Adult; D000367:Age Factors; D000368:Aged; D015992:Body Mass Index; D003480:Cushing Syndrome / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D005260:Female; D005385:Fingers / Q000000981:diagnostic imaging*; D006801:Humans; D008875:Middle Aged; D015663:Osteoporosis, Postmenopausal / Q000000981:diagnostic imaging*; D012680:Sensitivity and Specificity; D014463:Ultrasonography
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