Chronic Unexplained Thigh Pain from Saphenous Nerve Entrapment due to a Leiomyoma

Dear Editor, Lower extremity entrapment syndromes are seen less commonly than those pertaining to the upper limbs and, despite the use of various diagnostic tools, their diagnoses can really be challenging [1]. Likewise, entrapment of the saphenous nerve is quite rare [2] and has been reported to ensue mainly due to local trauma (e.g., surgery and fracture) or soft tissue (i.e., mass, scar) compression [2–4]. In this report describing a patient with unexplained chronic severe thigh pain, we would like to underscore the complementary roles of ultrasonography and electrodiagnostic evaluations for the prompt diagnosis of a rare scenario of saphenous nerve entrapment. A 40-year-old man was seen for left medial thigh pain for the last 5–6 years (worse in the last 4 months). His pain was stabbing and very …