Spontaneous regression of congenital cystic adenomatoid malformation of the lung: Longitudinal examinations by magnetic resonance imaging

Abstract Background Extradural intraspinal cysts are fluid accumulations that appear to be associated with increased motion at vertebral joints. Case presentation We report the spontaneous regression of lumbar and lumbosacral cysts (presumably synovial cysts) and the unusual occurrence of an S1–2 extradural intraspinal cyst in a dog. The dog presented with lumbosacral pain. Six extradural intraspinal cysts were observed on high-field magnetic resonance imaging from L5–6 to S1-S2. The cysts between L5–6 and L7-S1 ranged from 0.12 to 0.44cm2 at their largest area. The largest cyst was located at S1–2 (left), measuring 0.84 cm2 at its largest view. The dog was medically managed. A follow-up magnetic resonance imaging scan was obtained 3.5 years after the first imaging. All cysts except the one at S1–2 had reduced in size. Mean reduction in size was 59.6% (35–81%). Conclusions In summary, we report a case with multiple extradural intraspinal cysts that underwent spontaneous regression of all but one cyst during a 3.5-year follow-up period. Whether this is a single occurrence, or is part of the natural history of these cysts in the lumbosacral region of dogs, remains to be established. Spontaneous regression of intraspinal cysts had not been described in dogs.

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Spontaneous regression of a symptomatic developmental venous anomaly with capillary stain

Interventional Neuroradiology ◽

10.1177/15910199211032470 ◽

2021 ◽

pp. 159101992110324

Author(s):

Takeru Hirata ◽

Satoru Miyawaki ◽

Satoshi Koizumi ◽

Yu Teranishi ◽

Osamu Ishikawa ◽

...

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Contrast Enhancement ◽

Spontaneous Regression ◽

Precentral Gyrus ◽

Developmental Venous Anomaly ◽

Venous Anomaly ◽

Resonance Imaging ◽

Venous Anomalies ◽

Developmental Venous Anomalies

Background Developmental venous anomalies are considered benign lesions; however, they can become symptomatic. A capillary stain, which is an atypical angiographical feature of developmental venous anomalies, is reported to be relevant to symptomatic developmental venous anomalies. Case description A 20-year-old man with no pertinent medical history had an epileptic seizure. Magnetic resonance imaging showed severe focal oedema and gadolinium contrast enhancement in the right precentral gyrus and inferior frontal gyrus adjacent to the Sylvian fissure, indicating venous congestion; these presentations had not been observed on magnetic resonance imaging 8 months before. Digital subtraction angiography revealed a developmental venous anomaly with capillary stain. After conservative treatment, the brain oedema resolved spontaneously and contrast enhancement of the lesion reduced significantly. Conclusion We report a rare case of a symptomatic developmental venous anomaly with unique radiological characteristics and its natural and clinical evolution. Despite the presence of a capillary stain, our patient exhibited temporary exacerbations and spontaneous regression, suggesting that the capillary stain was associated with a reversible condition. This is the first report to detail the spatiotemporal changes of a developmental venous anomaly with capillary stain through imaging, suggesting that regular follow-up imaging is warranted in the management of patients with developmental venous anomalies.

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A Familial Case of Spontaneous Regression of Colloid Cyst of the 3rd Ventricle on Magnetic Resonance Imaging

Radiology - Open Journal ◽

10.17140/roj-4-125 ◽

2020 ◽

Vol 4 (1) ◽

pp. 13-15

Author(s):

Deepsha Agrawal ◽

◽

Athanasios Grivas ◽

Ancy Joseph ◽

◽

...

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Spontaneous Regression ◽

Colloid Cyst ◽

Familial Case ◽

Resonance Imaging ◽

3Rd Ventricle

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Fetal Congenital Peripheral Bronchial Atresia Diagnosed by Magnetic Resonance Imaging: Two Case Reports

American Journal of Perinatology Reports ◽

10.1055/s-0038-1673620 ◽

2018 ◽

Vol 08 (04) ◽

pp. e201-e205 ◽

Cited By ~ 1

Author(s):

Mitsuru Kozaki ◽

Yuko Iraha ◽

Hitoshi Masamoto ◽

Hayase Nitta ◽

Yukiko Chinen ◽

...

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Case Reports ◽

Main Bronchus ◽

Lung Lesion ◽

Congenital Cystic Adenomatoid Malformation ◽

Resonance Imaging ◽

Magnetic Resonance Imaging Mri ◽

Normal Shape ◽

Bronchial Atresia

AbstractTwo types of congenital bronchial atresia (proximal and peripheral) have been classified. We report two cases of peripheral bronchial atresia diagnosed by prenatal ultrasonography (US) and magnetic resonance imaging (MRI). Evaluating an enlarged lung mass that is homogeneously hyperechoic on US and hyperintense on T2-weighted MRI can help in determining whether bronchial atresia is present. Proximal type is suggested when a dilated main bronchus is observed as a tubule structure of an involved lung hilum. In our cases, T2-weighted MRI revealed homogeneously hyperintense lung lesion with decreased signal intensity of adjacent lobe, flattening diaphragm, and mediastinal shift. Dilatation of the main bronchus was not observed and the opposite lung was normal in appearance. These findings were explained by secondary compression due to enlargement of the involved lung. The preservation of vascular structure and the retained normal shape, though enlarged, in the affected lobe were observed, which demonstrated undisrupted pulmonary architecture of the lobe. Thus, congenital cystic adenomatoid malformation was excluded because pulmonary architecture was relatively preserved. Finally, presumed diagnoses of the peripheral bronchial atresia were made and confirmed by postnatal chest computed tomography.

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