MR imaging of pulmonary hydatid disease

Prieto, Amador; Díaz, Ana Carolina; Calvo, Juan; López-Negrete, Luis

doi:10.1016/0720-048x(95)00722-3

Cited by 4 publications

(7 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The presence of a capsule is helpful in differentiating unilocular hydatid cysts from simple cysts and narrowing the differential diagnosis (in complicated cases) 10 . However, the capsule is not a pathognomonic sign and, in the liver, it has also been described in hepatocarcinoma, amoebic abscess, adenoma and haematoma 4,8 . In the present study also the capsule was better seen on T2‐ and PD‐weighted images in nine patients.…”

Section: Discussionsupporting

confidence: 54%

“…The magnetic resonance signal characteristics of hydatid cyst may differ depending on the developmental phase; that is whether it is uni‐ or multilocular and whether the cyst is viable, infected or dead 4 . Information regarding reactive changes in the host tissue, capsule and signal intensity of parent and daughter cysts are also obtained.…”

Section: Discussionmentioning

confidence: 99%

“…The host attempts to isolate the cyst by forming a dense fibrous capsule around the parasitic membrane 3,8,9 . On T2‐ (including heavily T2‐) weighted images, the capsule is of low signal intensity, which has been described as the ‘low signal intensity rim’ sign 2–4,6–9 . The rim has a maximum thickness of 4–5 mm and represents the outer pericyst, ectocyst and inner parasite germinal membrane or endocyst 3,4,7–9 .…”

Section: Discussionmentioning

confidence: 99%

“…The magnetic resonance signal characteristics of hydatid cyst may differ depending on the developmental phase; that is whether it is uni-or multilocular and whether the cyst is viable, infected or dead. 4 Information regarding reactive changes in the host tissue, capsule and signal intensity of parent and daughter cysts are also obtained. In spinal hydatid, MRI helps in the comprehensive evaluation of the effect on adjacent neural structures and extension into the soft tissues, 5 as in one of the cases in the present series.…”

Section: Discussionmentioning

confidence: 99%

“…3,8,9 On T2-(including heavily T2-) weighted images, the capsule is of low signal intensity, which has been described as the 'low signal intensity rim' sign. [2][3][4][6][7][8][9] The rim has a maximum thickness of 4-5 mm and represents the outer pericyst, ectocyst and inner parasite germinal membrane or endocyst. 3,4,[7][8][9] On T1-weighted images, the capsule has been noted to appear isointense to the fluid and shows mild enhancement, which reflects the vascularity of the pericyst.…”

Section: Capsulementioning

confidence: 99%

See 4 more Smart Citations

Magnetic resonance imaging signal characteristics in hydatid cysts

Singh

Gibikote

2001

Australasian Radiology

View full text Add to dashboard Cite

The MRI features of hydatid cysts were retrospectively studied in 12 patients to look for specific signal characteristics. Twelve patients in the series included eight with abdominal, two with abdominal-pelvic, one with a sacral and one with a lung hydatid cyst. The T1-, T2- and proton density (PD)-weighted images of spin-echo sequence were used for imaging. The signal characteristics of the hydatid parent cyst capsule and fluid, daughter cyst fluid, detached germinal membrane and surrounding soft tissue reaction were noted. Observations revealed that the capsule is best seen on T2- and PD-weighted images. The daughter cysts are best demonstrated on T1-weighted images, whereas the difference in the signal intensities of parent cyst and daughter cyst fluid is better demonstrated on T2-weighted and T1-weighted images, and the detached germinal membrane is best seen on T2- and PD-weighted images. The signal characteristics of hydatid cyst morphology can help distinguish it from other entities.

show abstract

Section: Discussionsupporting

confidence: 54%

Section: Discussionmentioning

confidence: 99%