Radiology Packet 12

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Radiology Packet 12

• Thorax - Mediastinum

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8-year old Rottweiler

• Hx The owners report that the dog has sounded
  hoarse for 3 weeks.

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8-year old Rottweiler

• RF
• There is a diffuse increase in interstitial
  opacity in the lung fields. Some small,
  indistinct nodules are apparent.
• There is increased opacity in the perihilar
  region.
• In the lateral view there is widening and
  increased curvature of the angle between the
  trachea and the right cranial bronchus and
  ventral deviation of the caudal mainstem bronchi.
• The caudal mainstem bronchi are spread apart and
  compressed.
• RD
• Hilar lymphadenopathy
• Possible sternal lymphadenopathy
• Interstitial lung pattern (reticulonodular)
• R/O
• Lymphosarcoma
• Fungal pneumonia

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14-year old TerrierSandy

• Hx presented with a chronic cough.

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14-year old TerrierSandy

• RF
• Invagination of the dorsal tracheal membrane in
  the thoracic inlet region principally during
  expiration.
• Tracheal ring mineralization.
• Mineralization of the airways.
• RD
• Collapsing trachea

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5-year old Mixed breed dog

• Hx Presented for evaluation of tachypnea and
  dyspnea.

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5-year old Mixed breed dog

• RF
• The cardiac silhouette cannot be evaluated due to
  increased opacity within the pleural cavity.
• There is increased opacity of the thoracic cavity
  is due to the presence of free pleural fluid. The
  fluid has caused retraction of the lung lobes
  from the sternum as well as from the thoracic
  wall.
• RD
• Pleural effusion
• R/O
• Trauma
• Cardiac disease
• Presence of a cranial mediastinal mass
• Next
• Thoracocentesis and repeat radiographs
• Ultrasound

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11-year old LabradorJed

• Hx Radiographs taken prior to surgery to remove
  a testicular mass.

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11-year old LabradorJed

• RF
• Abnormal large discrete soft tissue mass within
  the cranial thorax on midline causing focal
  cranial mediastinal widening on the DV film.
• Caudal margin of the mass is nicely outlined on
  the lateral film.
• Spondylosis of the caudal thoracic spine is an
  incidental finding.
• RD
• Large discrete cranial mediastinal mass
• R/O
• Lymphosarcoma
• Thymoma
• Mast cell disease
• Branchial cyst
• Next
• Ultrasound guided biopsy

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10-year old YorkieJodie

• Hx One year history of coughing

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10-year old YorkieJodie

• RF
• Generalized heart enlargement.
• Left atrial enlargement appears to be impinging
  on the left mainstem bronchus.
• The inspiratory and expiratory radiographs show
  collapse of the cervical trachea on inspiration
  and collapse of the thoracic trachea and main
  stem bronchi on expiration.
• Hepatomegaly.
• RD
• Tracheal or mainstem bronchial collapse

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12-year old cat

• Hx Presented to you because of severe
  respiratory distress.

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12-year old cat

• RF
• Opacification of the right middle lung lobe
  silhouetting with the caudal heart border.
• Mild shift of the heart to the right may be
  present, although there is mild patient rotation.
• Soft tissue opacity overlying the trachea at the
  level of the thoracic inlet (C2-C6).
• RD
• Collapse of right middle lung lobe
• Irregular intraluminal tracheal mass
• R/O
• Collapse of lung lobe due to a nodule
• Collapse of lung lobe due to altered respiratory
  efforts and intrathoracic pressure because of the
  tracheal mass
• Feline asthma

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17-year old Shetland SheepdogChanel

• Hx Presented for coughing.

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17-year old Shetland SheepdogChanel

• RF
• On the lateral view there is a soft tissue
  opacity over the heart base with ventral
  displacement of the heart and trachea.
• On the DV view the soft tissue opacity at the
  hilar region, between the mainstem bronchi and
  extending to the right.
• Narrowing of the T6-7 IV disc space (incidental
  finding)
• RD
• Heart base mass
• R/O
• Lymphadenopathy