Imaging findings of expansile lesions of the thymus

Restrepo, Carlos S.; Pandit, Meenakshi; Rojas, Isabel; Villamil, Miguel A.; H, Gordillo; Lemos, Diego F.; Mastrogiovanni, Luciano; Diethelm, L

doi:10.1067/j.cpradiol.2004.10.001

Cited by 64 publications

(76 citation statements)

References 27 publications

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“…According to a few reports of the imaging findings of thymic carcinoid, this tumour is a rare mediastinal mass indistinguishable from thymoma on CT. 2,3 Our results also indicate that distinguishing thymic carcinoid from thymoma is very difficult. Although a high degree of enhancement may be characteristic of thymic carcinoid and a reticular septum within a rich haemorrhagic component may be characteristic of AC, these features require further investigation.…”

Section: Discussionsupporting

confidence: 50%

“…On CT, the thymic carcinomas appear as a large mass with irregular margins with areas of low attenuation related to necrosis, haemorrhage or cystic degeneration. 3 Sadohara et al 4 reported that the presence of irregular contours, a necrotic or cystic component, heterogeneous enhancement, lymphadenopathy and great vessel invasion on CT or MRI were strongly suggestive of thymic carcinomas. They also reported that the tumours showing smooth contours, an almost complete capsule, the presence of a septum and homogeneous enhancement were more likely to be low-risk thymomas (Types A, AB or B1) rather than high-risk thymomas (Types B2 or B3) or thymic carcinomas.…”

Section: Discussionmentioning

confidence: 99%

“…The large size of the tumour and necrotic foci are common characteristics shared between carcinoids and invasive thymomas. 3,17 The frequency of heterogeneous intensity on T 2 weighted images increases from Type A tumours to thymic carcinomas. 18 Tomiyama et al 19 reported that heterogeneous enhancement was present significantly more often in patients with Type B3 thymoma and in those with carcinoma.…”

Section: Discussionmentioning

confidence: 99%

“…Although only a few reports describing the imaging features of thymic carcinoid have been published, these lesions have been described as masses indistinguishable from thymomas. 2,3 The aim of our study was to evaluate the CT and MRI findings of thymic carcinoids and to compare these findings with previously published findings of thymomas.…”

Section: Introductionmentioning

confidence: 99%

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CT and MRI findings of thymic carcinoid

Shimamoto

Ashizawa

Kido

et al. 2017

The British Journal of Radiology

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Objective: To evaluate the CT and MRI findings of thymic carcinoid and to compare these findings with previously published findings of thymoma. Methods: 11 cases of pathologically proven thymic carcinoid were reviewed retrospectively. Three patients had typical carcinoid, and eight patients had atypical carcinoid. The characteristics of the tumours and related thoracic abnormalities were assessed in each case on CT and/or MRI by two chest radiologists. The final decisions on the findings were reached by consensus. Results: Thymic carcinoids were more likely to have a large mass (ranging from 18 to 105 mm), irregular contours (n 5 8), heterogeneous intensity on T 2 weighted images (n 5 6; eight patients underwent MRI), heterogeneous enhancement (n 5 9) and local invasion (n 5 7).A necrotic or cystic component was identified in seven patients (one typical carcinoid and six atypical carcinoids). Lymphadenopathy was seen in four patients. Septum, capsule, haemorrhage and calcification were seen in three patients, two patients, two patients and one patient, respectively, with atypical carcinoid. Conclusion: Thymic carcinoids tend to have a high prevalence of large masses, irregular contours, heterogeneous intensity on T 2 weighted images, heterogeneous enhancement and local invasion on CT and/or MRI. A necrotic or cystic component is often seen in atypical carcinoid. Advances in knowledge: Radiologic features of thymic carcinoid mimic those of high-risk thymomas and/or thymic carcinomas.

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Section: Discussionsupporting

confidence: 50%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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CT and MRI findings of thymic carcinoid

Shimamoto

Ashizawa

Kido

et al. 2017

The British Journal of Radiology

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show abstract

“…Morphologic features are used for characterizing thymic lesions, such as the contours and shapes of the lesions, the presence of necrosis, calcification, mediastinal fat or great vessel invasion, contrast enhancement, and adjacent lymph node enlargement. However, the morphologic findings of thymic lesions have many degrees of overlap among different entities, and thymic epithelial tumors show a broad spectrum of biologic and morphologic features [3,4].…”

mentioning

confidence: 99%