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Usefulness of CT imaging for segmental lung lobe torsion without typical radiographic imaging in a Pomeranian.

Choi M, Lee N, Keh S, Choi H, Yim Y, Kim H, Jung J, Choi M - J. Vet. Med. Sci. (2014)

Bottom Line: A 3-year-old, intact female Pomeranian presented with a 1-month history of coughing.Thoracic radiography showed focal infiltration of the left cranial lung lobe and widening of the cranial mediastinum.There was no apparent underlying etiology for the condition.

View Article: PubMed Central - PubMed

Affiliation: Haemaru Referral Animal Hospital, Seongnam 463-050, South Korea.

ABSTRACT
A 3-year-old, intact female Pomeranian presented with a 1-month history of coughing. Thoracic radiography showed focal infiltration of the left cranial lung lobe and widening of the cranial mediastinum. Subsequent computed tomography revealed torsion of the caudal segment of the left cranial lung lobe, which was confirmed by exploratory thoracotomy. There was no apparent underlying etiology for the condition. To the authors' knowledge, this is the first report of lung lobe torsion in this breed and the first detailed CT imaging report for segmental lung lobe torsion.

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Related in: MedlinePlus

Axially reformatted image of the lung (A) and mediastinal window (B, C). (A) The twisted lung lobe contained trapped gas (bottom, asterisk). (B, C) After intravenous contrast medium was administered (B, before; C, after), the mean increase in enhancement of the twisted lung lobe (arrow) was similar to the enhancement of focal infiltration in a normal lung lobe.
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fig_003: Axially reformatted image of the lung (A) and mediastinal window (B, C). (A) The twisted lung lobe contained trapped gas (bottom, asterisk). (B, C) After intravenous contrast medium was administered (B, before; C, after), the mean increase in enhancement of the twisted lung lobe (arrow) was similar to the enhancement of focal infiltration in a normal lung lobe.

Mentions: Diagram of normal left cranial lung lobe (A). The left cranial lobe is incompletely divided into a cranial (Cr.-Cr.) and a caudal segment (Cr.-Cd.); the 2 segments share a common lobar bronchus. In our case (B), the caudal segment was twisted toward the medial side (toward the mediastinum) of the cranial segment. Dorsally reformatted computed tomography image (C) of the dog (solid line, caudal segment; dashed line, cranial segment) and the bronchus (arrowhead) of the caudal segment of the LCrL, which was twisted, with abrupt termination (D). There was rarely pleural effusion (D, asterisk).


Usefulness of CT imaging for segmental lung lobe torsion without typical radiographic imaging in a Pomeranian.

Choi M, Lee N, Keh S, Choi H, Yim Y, Kim H, Jung J, Choi M - J. Vet. Med. Sci. (2014)

Axially reformatted image of the lung (A) and mediastinal window (B, C). (A) The twisted lung lobe contained trapped gas (bottom, asterisk). (B, C) After intravenous contrast medium was administered (B, before; C, after), the mean increase in enhancement of the twisted lung lobe (arrow) was similar to the enhancement of focal infiltration in a normal lung lobe.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4363028&req=5

fig_003: Axially reformatted image of the lung (A) and mediastinal window (B, C). (A) The twisted lung lobe contained trapped gas (bottom, asterisk). (B, C) After intravenous contrast medium was administered (B, before; C, after), the mean increase in enhancement of the twisted lung lobe (arrow) was similar to the enhancement of focal infiltration in a normal lung lobe.
Mentions: Diagram of normal left cranial lung lobe (A). The left cranial lobe is incompletely divided into a cranial (Cr.-Cr.) and a caudal segment (Cr.-Cd.); the 2 segments share a common lobar bronchus. In our case (B), the caudal segment was twisted toward the medial side (toward the mediastinum) of the cranial segment. Dorsally reformatted computed tomography image (C) of the dog (solid line, caudal segment; dashed line, cranial segment) and the bronchus (arrowhead) of the caudal segment of the LCrL, which was twisted, with abrupt termination (D). There was rarely pleural effusion (D, asterisk).

Bottom Line: A 3-year-old, intact female Pomeranian presented with a 1-month history of coughing.Thoracic radiography showed focal infiltration of the left cranial lung lobe and widening of the cranial mediastinum.There was no apparent underlying etiology for the condition.

View Article: PubMed Central - PubMed

Affiliation: Haemaru Referral Animal Hospital, Seongnam 463-050, South Korea.

ABSTRACT
A 3-year-old, intact female Pomeranian presented with a 1-month history of coughing. Thoracic radiography showed focal infiltration of the left cranial lung lobe and widening of the cranial mediastinum. Subsequent computed tomography revealed torsion of the caudal segment of the left cranial lung lobe, which was confirmed by exploratory thoracotomy. There was no apparent underlying etiology for the condition. To the authors' knowledge, this is the first report of lung lobe torsion in this breed and the first detailed CT imaging report for segmental lung lobe torsion.

Show MeSH
Related in: MedlinePlus