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CT scan (axial view) showed a well-circumscribed mass on the smooth defect in the proximal tibial metaphysis. The defect is smooth with sclerosed margin.
Source publication
Tumors of the peripheral nerve sheath including schwannomas are known for their rarity and can present with neurological deficit. We report an interesting case of schwannoma of the infrapatellar branch of saphenous nerve presenting with anteromedial knee pain and proximal tibial metaphyseal defect. A 26-year-old man presented with pain and swelling...
Contexts in source publication
Context 1
... investigations were normal and the ultra- sound showed a nonvascular, well-defined echogenic mass confined to the defect. Computed tomography (CT) scan showed a well-demarcated mass lying on the smooth sclerosed defect in the proximal tibia (Fig. 2). Magnetic resonance imaging (MRI) demon- strated well-defined lesion with no extension into the soft tissues or ...
Context 2
... investigations were normal and the ultra- sound showed a nonvascular, well-defined echogenic mass confined to the defect. Computed tomography (CT) scan showed a well-demarcated mass lying on the smooth sclerosed defect in the proximal tibia (Fig. 2). Magnetic resonance imaging (MRI) demon- strated well-defined lesion with no extension into the soft tissues or ...
Citations
... Surgical exploration and excision of the tumor resulted in complete and indefinite pain reduction. No adverse events were reported following the Schwannoma excision [15]. ...
Purpose of Review
The infrapatellar branch of the saphenous nerve (IPS) is an under-investigated nerve that can be a source of chronic knee pain. This literature review aims to deliver an up-to-date review of chronic pain transmitted via the IPS along with therapeutic approaches available for pain refractory to conservative measures.
Recent Findings
Knee pain transmitted via the IPS can arise from several etiologies. Damage to the IPS is often iatrogenic and develops following total knee arthroplasty, anterior cruciate ligament reconstruction, and other knee surgical procedures. Other causes of IPS-derived pain include entrapment of the nerve, neuromas, Schwannomas, and pain from knee osteoarthritis transmitted through the IPS.This article investigated therapeutic approaches to pain derived from the IPS. Common approaches included radiofrequency ablation, neuroma excisions, Schwannoma excision, nerve blocks, surgical exploration, surgical release of an entrapped nerve, cryoablation, and peripheral nerve stimulation. Pain scores, duration of pain relief, adverse events, and secondary outcomes were all included in this review.
Summary
A subset of the patient population experiences chronic pain deriving from the IPS that is refractory to conservative treatment measures. This review aims to evaluate the etiologies and therapeutic approaches for chronic pain arising from the IPS refractory to conservative treatments.
... the primary disease might only be diagnosed when the tumor grows with local swelling, pain, neurological deficits, and pathological fractures (12). As a result, long-term slow-growing encapsulated tumors could unknowingly result in bone destruction and defects. ...
Background
Schwannomas are benign tumors originating from Schwann cells, frequently occurring in the spinal cord and peripheral nerves. Intraosseous schwannomas, a rare subset, account for approximately 0.2% of schwannomas. Intraosseous schwannomas commonly impinge the mandible, followed by the sacrum and the spine. By far, only three cases of radius intraosseous schwannomas have been reported in PubMed. The tumor was treated differently in all three cases, resulting in different outcomes.Case presentationA 29-year-old male construction engineer who complained of a painless mass on the radial aspect of the right forearm was diagnosed with an intraosseous schwannoma of the radius based on radiography, three-dimensional computed tomography reconstruction, magnetic resonance imaging, pathological examination, and immunohistochemistry. A different surgical approach was employed to reconstruct the radial graft defect using bone microrepair techniques, resulting in more reliable bone healing and early functional recovery. Meanwhile, no clinical and radiographic findings suggestive of recurrence were observed at the 12-month follow-up.Conclusion
Vascularized bone flap transplantation combined with three-dimensional imaging reconstruction planning might yield better results for repairing small segmental bone defects of the radius caused by intraosseous schwannomas.
