Thursday, July 31, 2014

Retrocaval Ureter-Teaching Video

Retrocaval ureter is a rare cause of hydronephrosis. Its rarity and non-specific presentation pose a challenge to surgeons and radiologists in making the correct diagnosis.

Luftsichel Sign-CXR Teaching Video

Here is a teaching video of CXR sign. The Luftsichel sign is seen in some cases of left upper lobe collapse and refers to the frontal chest radiographic appearance due to hyperinflation of the superior segment of the left lower lobe interposing itself between the mediastinum and the collapsed left upper lobe.   

Sunday, July 27, 2014

18F-Sodium Fluoride PET Imaging of Osseous Metastatic Disease

Article in AJR by Curtis G Mick et al,review details the history, pharmacokinetics, and utility of 18F-sodium fluoride (Na18F) PET/CT in detecting osseous metastases compared with the current standard of care, technetium-99m methylene diphosphonate (99mTc-MDP) bone scintigraphy.  They concluded that Na18F PET/CT is the most comprehensive imaging modality for the evaluation of osseous metastatic disease

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Adductor Longus Tear-MRI

Football player-injury, shows evidence of altered signal intensity along with fluid signal and discontinuity in adductor longus proximal part, particularly in the pubic insertion along with retraction of the muscle belly, suggesting tear.  

Prostatic utricle cyst-MRI

Prostatic utricle cyst is a rare midline cystic lesion between the urinary bladder and the rectum. Cystic enlargement of prostatic utricle is a vestigial remnant of mullerian duct

Differential diagnoses include mullerian duct cyst.  However, mullerian duct cyst though may be connected to the verumontanum by a stalk; it does not communicate with the posterior urethra, present late in life and is not associated with genitourinary anomalies.

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