Publications by authors named "Juan P Niedmann"

Partial and segmental thrombosis of the corpus cavernosum is a rare pathology not entirely understood, however, there are some triggers that have been associated in its appearance. We present a case of a 36-year-old patient with bilateral partial thrombosis of the corpus cavernosum, without priapism, after use of a stationary exercise bike. Ultrasound and magnetic resonance findings are shown, in which bilateral involvement stands out.

View Article and Find Full Text PDF

An important side effect of radioactive iodine (RAI) therapy in patients treated for papillary thyroid cancer (PTC) is chronic sialadenitis. Neck ultrasonography (US) easily recognizes radioiodine-induced salivary gland abnormalities. The objectives of this study were to determine the prevalence of US-detected sialadenitis caused by RAI and to identify the risk factors associated with this damage.

View Article and Find Full Text PDF

Context: There is a high prevalence of thyroid nodules on ultrasonographic (US) examination. However, most of them are benign. US criteria may help to decide cost-effective management.

View Article and Find Full Text PDF

Purpose: To prospectively determine diagnostic performance and safety of contrast material-enhanced (CE) magnetic resonance (MR) angiography with 0.1 mmol per kilogram of body weight gadobenate dimeglumine for depiction of significant steno-occlusive disease (> or =51% stenosis) of renal arteries, with digital subtraction angiography (DSA) as reference standard.

Materials And Methods: This multicenter study was approved by local institutional review boards; all patients provided written informed consent.

View Article and Find Full Text PDF

SAPHO syndrome is a rare entity that compromises the skeletal system (arthritis-osteitis) and is associated with various dermatological conditions such as palmoplantaris pustulosis (PPP) and acne. We present the case of a 39-year-old man with invalidating arthritis derived from a SAPHO syndrome and hypothyroidism (after radioiodine treatment for a Graves' disease). Due to the severity and refractoriness of his disease, we decided to use infliximab.

View Article and Find Full Text PDF