ArticleJournal of surgical case reports2026
Lateral cutaneous nerve entrapment syndrome associated with appendicitis.
Article in Journal of surgical case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
A man in his 60s presented with localized right flank pain. Physical examination revealed a discrete tender point and a positive pinch sign. A trigger-point block led to immediate pain relief. Based on these findings, he was clinically diagnosed with lateral cutaneous nerve entrapment syndrome (LACNES). His Alvarado score was 7 and abdominal computed tomography revealed appendiceal swelling and surrounding fat stranding, indicating underlying appendicitis. The patient underwent emergency laparoscopic appendectomy. He made a full recovery with no recurrence of the pain. In this case, we speculate that appendicitis and localized peritonitis might have caused entrapment of the lateral cutaneous nerve as a result of muscle guarding. In patients with localized flank pain resembling LACNES, clinicians should not overlook the possibility of underlying intra-abdominal inflammatory conditions such as appendicitis.
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