Vestnik rentgenologii i radiologii · 2014
[Computed tomography pattern of unchanged mediastinal lymph nodes in children with uninfected Mycobacterium tuberculosis].
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Shepeleva L P, Tiyrin I E
Аннотация
OBJECTIVE: To provide X-ray characteristics of mediastinal lymph nodes revealed by computed tomography (CT) in children and adolescents with uninfected Mycobacterium tuberculosis.
MATERIAL AND METHODS: The basis of the study was the results of CT in 105 children and adolescents with uninfected with Mycobacterium tuberculosis. All the children and adolescents from a follow-up group underwent X-ray study using a two-slice spiral Somatom Emotion Duo CT scanner (Siemens). The study used a conventional procedure for chest scanning in children, by applying the Thorax Routine program.
RESULTS: The study ascertained that Groups 1-3 intrathoracic lymph nodes were visualized in 73.3% of the children in normalcy and were not in 22.8%. In children, the normal size of the lymph nodes did not exceed 0.8 cm in diameter; they had a homogeneous structure and clearly defined, even outlines; their perinodular fat was unchanged. CT data showed that the sizes and number of visible groups of lymph nodes were unrelated to age.
CONCLUSION: The upper diameter limit for normal mediastinal lymph nodes may be established to be 8 mm if there were no abnormal changes in the structure of lymph nodes and perinodular fat.
MATERIAL AND METHODS: The basis of the study was the results of CT in 105 children and adolescents with uninfected with Mycobacterium tuberculosis. All the children and adolescents from a follow-up group underwent X-ray study using a two-slice spiral Somatom Emotion Duo CT scanner (Siemens). The study used a conventional procedure for chest scanning in children, by applying the Thorax Routine program.
RESULTS: The study ascertained that Groups 1-3 intrathoracic lymph nodes were visualized in 73.3% of the children in normalcy and were not in 22.8%. In children, the normal size of the lymph nodes did not exceed 0.8 cm in diameter; they had a homogeneous structure and clearly defined, even outlines; their perinodular fat was unchanged. CT data showed that the sizes and number of visible groups of lymph nodes were unrelated to age.
CONCLUSION: The upper diameter limit for normal mediastinal lymph nodes may be established to be 8 mm if there were no abnormal changes in the structure of lymph nodes and perinodular fat.