"Solid" mediastinal bronchogenic cyst: mineralogic analysis

Yernault, J C; Kuhn, G.; Dumortier, Pascal; Rocmans, Pierre Arthur; Ketelbant, P.; Vuyst, Paul De

doi:10.2214/ajr.146.1.73

Cited by 39 publications

(11 citation statements)

References 7 publications

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“…The reported CT attenuation values of the intrapulmomary bronchogenic cysts are not significantly different from those of mediastinal bronchogenic cysts [1,2,4]. The high attenuation of bronchogenic cysts on unenhanced CT scans is caused by hemorrhage, proteinaceous mucus, calcium, or calcium oxalate [1,[6][7][8][9]. In our study, two cysts showed isoattenuation on unenhanced scans, a finding that at pathologic examination was attributed to the presence of thick, turbid, and gelatinous material.…”

Section: Discussioncontrasting

confidence: 41%

Intrapulmonary Bronchogenic Cyst: CT and Pathologic Findings in Five Adult Patients

Yoon

Lee

Kim

et al. 2002

American Journal of Roentgenology

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Section: Discussioncontrasting

confidence: 41%

Intrapulmonary Bronchogenic Cyst: CT and Pathologic Findings in Five Adult Patients

Yoon

Lee

Kim

et al. 2002

American Journal of Roentgenology

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“…In some mediastinal cysts, CT may reveal high attenuation similar to solid lesions due to a high level of protein and calcium oxalate in the cystic contents (59). In such situations, MRI can be useful in the differentiation of cystic masses from solid lesions.…”

Section: Mediastinal Cystic Massesmentioning

confidence: 99%

Computed tomography and magnetic resonance imaging of mediastinal tumors

Takahashi¹,

Al-Janabi²

2010

Magnetic Resonance Imaging

176

131

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We describe the clinical, pathological, and imaging findings of mediastinal tumors with focus on thymic hyperplasia, thymic epithelial tumors, and germ cell tumors, malignant lymphoma, and various cystic masses. Chemical shift magnetic resonance imaging (MRI) is useful in characterization of the normal thymus and differentiation of hyperplastic thymus and thymic tumors. In contrast to noninvasive thymomas, invasive thymomas and thymic carcinomas show a more aggressive growth pattern. Local invasion and pleural spread are characteristic of invasive thymoma and mediastinal lymphadenopathy and distant metastasis suggest thymic carcinomas. Mature teratoma typically shows various computed tomography (CT) attenuation, and MR signal intensity depending on its contents and fat tissue and bone within the lesions are its characteristic findings. Seminomas typically have homogenous internal CT attenuation and MR signal intensity with minimal contrast enhancement. Nonseminomatous malignant germ cell tumors characteristically show prominent internal degenerative changes and invasion to the adjacent structures. In mediastinal lymphomas, a residual mass is common after treatment and MRI provides important information in distinguishing viable tumors from residual benign masses. Some mediastinal cysts may reveal high attenuation similar to solid lesions on CT depending on their contents and MRI can be useful in the differentiation of cystic masses from solid lesions.

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“…On chest radiographs they are round, well-circumscribed, unilocular or multilocular masses. CT density may vary from typical water density (0-20 HU) to high density (89-99 HU), as illustrated in our cases [6]. MRI appearance is of a mass of low (grey to black) or high (white to gray) signal intensity in T1-weighted imaging, and bright (white) signal intensity in T2-weighted imaging [7,8].…”

Section: Discussionmentioning

confidence: 63%

Bronchogenic cyst presenting as mediastinal mass with pleural effusion

Khalil¹,

Mf²,

Milleron³

et al. 1995

Eur Respir J

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Mediastinal bronchogenic cysts are usually identified on computed tomography (CT) as well-defined masses of variable density that may contain rim calcifications. Pleural effusion has never been described in association with these cysts.We report two cases of bronchogenic cysts with unusual presentation because of an association with a pleural effusion not explained by pulmonary infection. The patients were studied with CT scan (n=2) and magnetic resonance imaging (MRI) of the chest (n=1).In the first case, the pleural effusion directed diagnosis towards lung tumour; and the diagnosis of bronchogenic cyst was made on thoracotomy. In the second case, bronchogenic cyst was suspected on MRI findings. Inflammatory reaction was also suspected on the CT scan, which showed enhancement of the cyst edge.In both cases, surgical excision of the cyst was difficult because of pericystic adhesions to adjacent organs. Therefore, solely on the finding of a pleural effusion, pericystic inflammation had to be suspected. Eur Respir J., 1995Respir J., ., 8, 2185Respir J., -2187 Bronchogenic cysts are congenital abnormalities resulting from embryological budding of the bronchial tree; they often arise near the carina [1][2][3]. Mediastinal bronchogenic cysts are frequently detected incidentally, on routine chest radiographs. They manifest as smooth and well-circumscribed masses near the carina [2,3].We describe two cases of bronchogenic cyst that appeared as mediastinal mass with pleural effusion, without pulmonary infection. To our knowledge, this radiological manifestation, in association with bronchogenic cyst, has not previously been reported. Case reports Case 1A 49 year old man presented with a one month history of dysphagia. Chest radiography revealed right mediastinal mass and ipsilateral pleural effusion. Oesophagoscopy revealed a marked extrinsic compression of the oesophagus. Fibreoptic bronchoscopy showed an infiltration of the mucosa of the right intermediate bronchus.Biopsies were negative.Chest computed tomography (CT) scans showed a mediastinal tumoral mass with tissular density (35 Hounsfield units (HU)) and a right pleural effusion ( fig. la and b). CT guided needle biopsies were negative. The diagnosis of necrotic mediastinal malignancy with pleural effusion was suspected. Fig. 1. -Case 1. a) Computed tomography (CT) scan 10 mm thick slice, medistinal windows, shows the mass behind and under the carina, associated with a right pleural effusion. b) Lower level; the mass does not enhance after contrast media injection. Enhancement of its right edge is probably related to inflammatory mediastinal pleura or to a lung collapse around the mass. Right pleural effusion is apparent.

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"Solid" mediastinal bronchogenic cyst: mineralogic analysis

Cited by 39 publications

References 7 publications

Intrapulmonary Bronchogenic Cyst: CT and Pathologic Findings in Five Adult Patients

Intrapulmonary Bronchogenic Cyst: CT and Pathologic Findings in Five Adult Patients

Computed tomography and magnetic resonance imaging of mediastinal tumors

Bronchogenic cyst presenting as mediastinal mass with pleural effusion

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