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Aim: To evaluate the ultrasound (US) modifications [grey scale, Doppler, 2D-share wave elastography (2D-SWE)] ofsalivary (parotid and submandibular) and lacrimal glands in healthy people and patients with diabetes mellitus and/or obesity, with or without sialosis.Material and methods: We evaluated 170 patients (1020 glands, 1700 grey scale and Doppler images), split in two groups (group 1- healthy people, group 2- obese and/or diabetes patients, with or without sialosis). For each patient we assessed the parotid, submandibular and lacrimal glands in grey scale US (echogenicity, homogeneity, glandular contour, posterior border, lymph nodes), color Doppler US and 2D-SWE. All images were analyzed by two examiners blinded to each other or to patients.Results: The interobserver agreement was strong or moderate for all parameters. In group 2, the salivary glands had increased echogenicity, homogeneous aspect and invisible posterior border (all p<0.001). There was no significant variation of elasticity modulus in the groups analyzed (5.46±1.57 vs 5.67±1.81 in parotid, 8.63±1.84 vs 8.55±1.94 in submandibular and 9.47±2.1 vs 9.53±2.23 in lacrimal glands, all p<0.05) or according to the body mass index (BMI), sex, patient age, the aspect in grey scale/Doppler US or the presence of sialosis (all p<0.05).Conclusion: The main US differences between healthy people and patients with diabetes mellitus and/or obesity are suggested by the echogenicity, homogeneity, posterior border and the size of glandular area. No significant differences of elasticity modulus were found between the analyzed groups or related to BMI, sex, patient age or other grey scale/Doppler US items analyzed.

Primary synovial osteochondromatosis is a rare disorder and its diagnosis remains a challenge to the physician. We present the case of 36 year old patient with right knee monoarthritis in which ultrasound findings, corroborated with clinical and histopathological evidence confirmed the diagnosis of unossified primary synovial osteochondromatosis. The arthroscopy with synovectomy found multiple intra-articular loose bodies occupying the entire joint. The ultrasonographic findings were extensively evaluated.

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