Enhancement characteristics of lymphomatous lymph nodes of the mediastinum

Hagtvedt, Trond; Aaløkken, Trond Mogens; Smith, H.-J.; Graff, Bjørn A.; Holte, Harald; Kolbenstvedt, A

doi:10.1258/ar.2011.110265

Cited by 2 publications

(13 citation statements)

References 25 publications

(29 reference statements)

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“…In line with our previous findings (15,16) no significant difference in wash-out was observed between the LLN and the normal nodes ( Table 1).…”

Section: Discussionsupporting

confidence: 93%

“…This makes it unlikely that the generally lower enhancement of the LLN was due to their larger size. The role of modern functional imaging techniques as PET/CT (29 -31) to further improve the diagnostic accuracy was discussed in our previous articles (15,16).…”

Section: Discussionmentioning

confidence: 99%

“…In previous investigations we have found that both LLN of the neck (14, 15) and LLN of the mediastinum (16) had significantly lower contrast enhancement values than those of presumably normal lymph nodes from the corresponding regions. The LLN of the mediastinum seemed to have a peak contrast value which was lower and arrived later after injection than that of LLN of the neck (15).…”

mentioning

confidence: 81%

“…We compared the enhancement curves of the present retro-peritoneal nodes with those of two previous, similar investigations; LLN of the neck (15) which comprised 64 LLN from 28 patients and 47 nodes from 20 control patients and LLN of the mediastinum (16) which comprised 53 LLN from 24 patients and 26 nodes from 23 control patients.…”

Section: Methodsmentioning

confidence: 97%

“…Could the previously found lower attenuation values of LLN be confirmed by similar findings in the retroperitoneal LLN, and could these differences between the attenuation curves be of possible diagnostic value? Second, we wanted to investigate whether the attenuation curves differed from region to region by comparing the present values with those of the neck and of the mediastinum from the two previous similar investigations (15, 16). Would the longer intraluminal distance from the heart to the retroperitoneal nodes imply a lower and later peak than that of the mediastinal LLN?…”

mentioning

confidence: 97%

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Enhancement Characteristics of Retroperitoneal Lymphomatous LYMPH Nodes

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The comparison of enhancement curves of retroperitoneal LLN with retroperitoneal control nodes showed a marked similarity with and substantiates our previous findings in lymph nodes of the neck and of the mediastinum. The best diagnostic accuracy was achieved by combining the parameters peak contrast value and time to peak and adjusting these values to the body weight. Peak enhancement of the retroperitoneal LLN was higher and arrived earlier than that of the mediastinal nodes from the previous investigation.

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“…In line with our previous findings (15,16) no significant difference in wash-out was observed between the LLN and the normal nodes ( Table 1).…”

Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 81%

Section: Methodsmentioning

confidence: 97%

mentioning

confidence: 97%

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Enhancement Characteristics of Retroperitoneal Lymphomatous LYMPH Nodes

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Диффузионно-Взвешенная Магнитно-Резонансная Томография Нормальных Лимфатических Узлов

Хоружик¹

2020

№1 (2020)

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Цель исследования определить характеристики нормальных лимфатических узлов (ЛУ) при диффузионно-взвешенном МРТ-исследовании (ДВИ). ДВИ выполнено 92 пациентам без установленного диагноза злокачественной опухоли или других заболеваний, сопровождающихся поражением ЛУ. ЛУ шеи, подмышечные, брюшной полости, подвздошные и паховые визуализировались на изображениях с высоким фактором диффузии у всех пациентов, средостения у 28 пациентов, корней легких только у 20. Средние размеры ЛУ по короткой оси составили 78 мм независимо от анатомической группы, по длинной оси варьировали от 10 мм (ЛУ корней легких) до 14 мм (ЛУ шеи и подвздошные). Максимальный размер по короткой оси достигал 11 мм, по длинной 24 мм. Выявлена значительная вариабельность значений измеряемого коэффициента диффузии (ИКД) нормальных ЛУ, который в порядке увеличения составил (103 мм2/с): ЛУ шеи 1,250,19, подвздошные 1,250,21, подмышечные 1,460,26, паховые 1,630,26, брюшной полости 2,030,38, средостения 2,360,56, корней легких 2,550,43. При визуальной оценке 97 шейных и 61 подвздошных ЛУ имели сигнал на картах ИКД ниже сигнала мышц, большинство ЛУ остальных анатомических групп равный или выше сигнала мышц. Выявленные особенности могут быть использованы для оптимизации критериев дифференциальной диагностики нормальных и пораженных при лимфоме ЛУ. The aim of this study is to define the characteristics of normal lymph nodes (LN) on diffusion- weighted MRI (DWI). DWI was performed in 92 patients without the known diagnosis of cancer or other diseases associated with LN involvement. The neck, axillary, abdominal, iliac and inguinal LN were visualized on high diffusion factor images in all patients, mediastinal in 28 of patients, lung hilum in 20 of patients. The average short axis diameter of LN was 78 mm, regardless of the anatomical group long axis diameter ranged from 10 mm (hilar LN) to 14 mm (neck and iliac LN). The maximum short axis diameter reached 11 mm and long axis diameter reached 24 mm. Considerable variation of apparent diffusion coefficient (ADC) in normal LN was observed, which was the following in the increasing order (103 mm2/s): neck LN 1,250,19, iliac 1,250,21, axillary 1,460,26, inguinal 1,630,26, abdominal 2,030,38, mediastinal 2,360,56, hilar 2,550,43. In visual assessment, 97 of neck LNs and 61 of iliac LN had signal below signal of muscles on ADC maps. Most of LN of other anatomical groups had the signal equal to or higher than that of muscles. The identified features can be used to optimize the criteria for the differential diagnostics of normal LN and those involved in lymphoma.

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Enhancement characteristics of lymphomatous lymph nodes of the mediastinum

Abstract: The comparison of enhancement curves of mediastinal LLN with mediastinal control nodes showed a marked similarity with and substantiates our previous findings in lymph nodes of the neck.

Cited by 2 publications

References 25 publications

Enhancement Characteristics of Retroperitoneal Lymphomatous LYMPH Nodes

Enhancement Characteristics of Retroperitoneal Lymphomatous LYMPH Nodes

Диффузионно-Взвешенная Магнитно-Резонансная Томография Нормальных Лимфатических Узлов

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