ENGLISH ABSTRACT
JOURNAL ARTICLE
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[Diagnostic value of endobronchial ultrasonography with a guide sheath for peripheral pulmonary ground glass opacity].

Objective: To explore the diagnostic value of endobronchial ultrasonography with a guide sheath (EBUS-GS) for peripheral pulmonary ground glass opacity (GGO). Methods: The clinical data of 27 consecutive patients with 27 GGOs diagnosed by EBUS-GS between November 2014 to December 2015 in our Cancer Hospital were retrospectively analyzed. The average age of these 27 patients, including 9 males and 18 females, was 59±11 years. The median lesion size of the 27 GGOs was 2.9±1.2 cm, including 24 mixed GGOs and 3 pure GGOs. EBUS images of all 27 GGOs were evaluated, cytological, histological and combination diagnosis analyzed, and complications observed. Results: Under thin bronchoscope, 2 out of 27 cases showed bronchial stenosis, 1 showed bronchial stenosis with mucosal swelling, and the other 24 did not show abnormalities. Twenty-five out of 27 GGOs were found by EBUS, including 22 cases of mGGO and 3 of pGGO. In these ultrasonic images of 22 mGGOs, 18 showed mixed blizzard sign, 3 showed diffusely heterogeneous acoustic shadow and 1showed blizzard sign. Ultrasonic images of 3 pGGOs all appeared as blizzard sign. Twenty-six cytological specimens were obtained, and 16 were diagnosed clearly. All 27 histological specimens were collected, and 18 were diagnosed clearly. Nineteen of 27 cases were diagnosed by combination of cytological and histological specimens. One complication of EBUS-GS with mild bleeding was observed, and hemorrhage was terminated by conservative treatment. Conclusions: EBUS-GS is valuable for GGO diagnosis with less complications and higher safety. GGO ultrasonic image manifested as mixed blizzard sign, blizzard sign or diffusely heterogeneous acoustic shadow.

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