Sonographic Detection and Localization of a Clinically Nondetectable Subcutaneous Contraceptive Implant

Compound Versus Fundamental Imaging in the Detection of Subdermal Contraceptive Implants

“…Multiple reports available in the literature suggest that highfrequency sonography is the first-line modality for locating nonpalpable implants. 2,4,5 If sonography fails to visualize the rod, magnetic resonance imaging can be used as the second-line modality. 6 Although the concept of compound sonography has been around since the 1960s, only recently have advances in computing power and image processing made real-time spatial compound sonography a reality.…”

Ultrasound localisation of non‐palpable Implanon

“…It has been reported before that ultrasound and MRI can be used to localise placebo Implanon in phantoms 2,3 . A literature search showed only case reports of the management of patients with a non‐palpable Implanon 3,9,10 . Two case reports relied mainly on MRI to localise the rod 3,10 …”

Ultrasound localisation and removal of non‐palpable Implanon implants

“…Non‐palpable implants should be imaged to confirm their presence. MRI and ultrasound can show the position of Implanon rods 1–3,7,8 . Ultrasound is highly accurate, more available and cheaper than MRI; it is therefore the modality of choice in localising non‐palpable implants.…”

“…The remaining four implants were too close to neurovascular structures and were surgically removed without complication after ultrasound localisation. Previous reports in the literature have focused on ultrasound localisation and surgical removal of non‐palpable implants 5,7,8 …”