• 1.

    Boya H , Ozcan O & Oztekin HH: Tarsal tunnel syndrome associated with a neurilemoma in posterior tibial nerve: a case report. Foot (Edinb) 18 : 174, 2008.

  • 2.

    Ahmad M , Tsang K & Mackenney PJ et al.: Tarsal tunnel syndrome: a literature review. Foot Ankle Surg 18 : 149, 2012.

  • 3.

    Dellon AL. The four medial ankle tunnels: a critical review of perceptions of tarsal tunnel syndrome and neuropathy. Neurosurg Clin North Am 19 : 629, 2008.

    • Crossref
    • PubMed
    • Web of Science
    • Search Google Scholar
    • Export Citation
  • 4.

    Tladi MJ , Saragas NP & Ferrao PN et al.: Schwannoma and neurofibroma of the posterior tibial nerve presenting as tarsal tunnel syndrome: review of the literature with two case reports. Foot (Edinb) 32 : 22, 2017.

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 5.

    Nawabi DH & Sinisi M. Schwannoma of the posterior tibial nerve: the problem of delay in diagnosis. J Bone Joint Surg Br 89 : 814, 2007.

    • PubMed
    • Web of Science
    • Search Google Scholar
    • Export Citation
  • 6.

    Hallahan K , Vinokur J & Demski S et al.: Tarsal tunnel syndrome secondary to schwannoma of the posterior tibial nerve. J Foot Ankle Surg 53 : 79, 2014.

    • Crossref
    • PubMed
    • Web of Science
    • Search Google Scholar
    • Export Citation
  • 7.

    Kwok KB , Lui TH & Lo WN. Neurilemmoma of the first branch of the lateral plantar nerve causing tarsal tunnel syndrome. Foot Ankle Spec 2 : 287, 2009.

  • 8.

    Marui T , Yamamoto T & Akisue T et al.: Neurilemmoma in the foot as a cause of heel pain: a report of two cases. Foot Ankle Int 25 : 107, 2004.

  • 9.

    Milnes HL & Pavier JC: Schwannoma of the tibial nerve sheath as a cause of tarsal tunnel syndrome—a case study. Foot (Edinb) 22 : 243, 2012.

  • 10.

    Judd T , Jones T & Thornberry L: Schwannoma of the posterior tibial nerve: case study. JAPMA 104 : 539, 2014.

  • 11.

    Albert P , Patel J & Badawy K et al.: Peripheral nerve schwannoma: a review of varying clinical presentations and imaging findings. J Foot Ankle Surg 56 : 632, 2017.

    • Crossref
    • PubMed
    • Web of Science
    • Search Google Scholar
    • Export Citation
  • 12.

    Pfeiffer WH & Cracchiolo A III. Clinical results after tarsal tunnel decompression. J Bone Joint Surg Am. 76 : 1222, 1994.

  • 13.

    Smith W & Amis J: Neurilemmona of the tibial nerve: a case report. J Bone Joint Surg Am 74 : 443, 1992.

  • 14.

    Ghaly RF: A posterior tibial nerve neurilemmoma unrecognized for 10 years: case report. Neurosurgery 48 : 668, 2001.

  • 15.

    Kellner CP , Sussman E & Bar-David T et al.: Schwannomas of the foot and ankle: a technical report. J Foot Ankle Surg 53 : 505, 2014.

    • Crossref
    • PubMed
    • Web of Science
    • Search Google Scholar
    • Export Citation
  • 16.

    Zivot ML , Pitzer S & Pantig-Felix L et al.: Malignant schwannoma of the medial plantar branch of the posterior tibial nerve [abstract]. J Foot Surg 29 : 130, 1990.

    • PubMed
    • Search Google Scholar
    • Export Citation
  • 17.

    Viola E , Solà M & Stroppa S et al.: Malignant schwannoma in the posterior tibial nerve. Foot 16 : 216, 2016.

Tarsal Tunnel Syndrome Caused by an Occult Schwannoma of the Posterior Tibial Nerve: Avoidance of Delay in Diagnosis

Mehmet Burak Yalcin
Search for other papers by Mehmet Burak Yalcin in
Current site
Google Scholar
PubMed
Close
 MD
and
Utku Erdem Ozer
Search for other papers by Utku Erdem Ozer in
Current site
Google Scholar
PubMed
Close
 MD

Tarsal tunnel syndrome (TTS), resulting from compression of the posterior tibial nerve (PTN) within the tarsal tunnel, is a relatively uncommon entrapment neuropathy. Many cases of tarsal tunnel syndrome are idiopathic; however, some causes, including space-occupying lesions, may lead to occurrence of TTS symptoms. Schwannoma, the most common tumor of the sheath of peripheral nerves, is among these space-occupying lesions, and may cause TTS when it arises within the tarsal tunnel, and it may mimic TTS even when it is located outside the tarsal tunnel and cause a significant delay in diagnosis. The possibility of an occult space-occupying lesion compressing the PTN should be kept in mind in the differential diagnosis of TTS, and imaging studies that are usually not used in entrapment neuropathies may be of importance in such patients. This case report presents a 65-year-old woman with TTS symptoms and neurophysiologic findings secondary to an occult schwannoma of the PTN proximal to the tarsal tunnel. Avoidance of delay in diagnosis in secondary cases is emphasized.

Department of Orthopaedic Surgery and Traumatology, Faculty of Medicine, Biruni University, Istanbul, Turkey.

Corresponding author: Mehmet Burak Yalcin, MD, Department of Orthopaedic Surgery and Traumatology, Faculty of Medicine, Biruni University, Beylikdüzü Street, No 3, Beylikdüzü, Istanbul, Turkey. (E-mail: mehmetburakyalcin@gmail.com)
Save