The study design includes case report and clinical discussion. The objective was to describe a rare case of a giant intramuscular myxoma (IMM) presenting as a mass in the paravertebral muscles. Myxoma is a rare benign soft tissue tumour of mesenchymal origin. Although intramuscular presentation is common, they are rare in the paravertebral muscles and are characteristically \5 cm in length. We report the clinical and imaging features in a 70-year-old woman presenting with back pain, asymmetry of the waist and a mass in right paravertebral region. This was originally misdiagnosed as a juxtafacet synovial cyst after CT-guided biopsy. The mass was excised en bloc and sent for histology. This revealed a low-grade myxoid neoplasm with features of an IMM. The patient went on to make a complete recovery. To our knowledge, this is only the fifth case of paravertebral IMM reported in the literature and at approximately 15 cm in length may be the largest encountered in clinical practice.

Patients with foreign bodies inside soft tissues are common in a surgeon's daily practice,. Radio-opaque foreign bodies can easily be located with radiography but radio-lucent foreign bodies cannot be located with X-ray, where Ultrasonography especially, high resolution ultrasonography can be used to locate it. Ultrasonography, being easily available, cost-effective and radiation-hazard free, can be done repeatedly for foreign bodies which move inside tissues. The presenting article describes a patient with a radio-lucent foreign body, deep inside muscle in his fore-arm and having one sharp end, was advancing inside tissues, was located with the help of Ultrasonography and was removed.