title: Underlying Adenocarcinoma of the Lung Metastasizing to the Proximal Phalanx of the Foot Causing Complex Regional Pain SyndromeA Case Report.
abstract: We report an unusual case of adenocarcinoma of the lung metastasizing to the proximal phalanx of the third digit in a 56-year-old woman with overlying complex regional pain syndrome. The patient was initially treated for neuroma, fracture, and neuropathic pain with no improvement over a 4-month period before presenting to the emergency department for left third digit pain. Radiographic imaging showed substantial osteopenia and mottling; magnetic resonance imaging demonstrated an aggressive lesion to the proximal phalanx. The patient underwent excision of the lesion, revealing metastatic moderately differentiated adenocarcinoma.
authors.forename: Sam
authors.initials: S
authors.lastname: Bazrafshan
authors.forename: Maria
authors.initials: M
authors.lastname: Pacheco
authors.forename: Julio C
authors.initials: JC
authors.lastname: Ortiz
mesh_terms: D000230:Adenocarcinoma / Q000000981:diagnostic imaging* / Q000556:secondary; D001707:Biopsy, Needle; D001859:Bone Neoplasms / Q000000981:diagnostic imaging* / Q000556:secondary* / Q000601:surgery; D020918:Complex Regional Pain Syndromes / Q000175:diagnosis / Q000209:etiology; D018450:Disease Progression; D004636:Emergency Service, Hospital; D017809:Fatal Outcome; D005260:Female; D005528:Foot / Q000000981:diagnostic imaging / Q000503:physiopathology; D006801:Humans; D007150:Immunohistochemistry; D008175:Lung Neoplasms / Q000175:diagnosis / Q000473:pathology*; D008279:Magnetic Resonance Imaging / Q000379:methods; D008875:Middle Aged; D064847:Multimodal Imaging / Q000379:methods*; D049268:Positron-Emission Tomography / Q000379:methods; D014033:Toe Joint / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery