title: [A case of superior sulcus tumor treated with carbon ion radiotherapy].
abstract: Superior sulcus tumor( SST) is a rare type of lung cancer. Treatment usually consists of surgical resection after chemoradiotherapy. We report a case of a woman in her fifties who underwent carbon ion radiotherapy for SST. The patient complained of left shoulder pain, and imaging studies revealed a 5.2×3.5-cm local solid tumor at the apex of the left lung, invasion to the ribs, and no lymph node swelling. The level of tumor marker, carcinoembryonic antigen (CEA), was 5.7 ng/mL. Needle biopsy specimen revealed adenocarcinoma. The diagnosis was SST, T3N0M0, stage IIB. We did not detect Horner syndrome. Carbon ion radiotherapy at 66 Gy equivalent dose per 10 fractions was administered to the SST site. Subsequently, the tumor size decreased to 4.5×1.9-cm. The adverse effect was Grade 1 skin and pulmonary toxicity. Six months later, Grade 2 left shoulder connective tissue toxicity was observed; it was difficult to differentiate this from tumor recurrence. After 2.5 years from radiotherapy, the patient is free from recurrence. Carbon ion radiotherapy is effective and safe and can be considered as an important treatment option for SST.
authors.affiliation: Dept. of Surgery, Minoh City Hospital.
authors.forename: Takashi
authors.initials: T
authors.lastname: Doi
authors.forename: Eiji
authors.initials: E
authors.lastname: Kurokawa
authors.forename: Yuko
authors.initials: Y
authors.lastname: Kobori
authors.forename: Minako
authors.initials: M
authors.lastname: Hoshi
authors.forename: Hideki
authors.initials: H
authors.lastname: Osawa
authors.forename: Hirotsugu
authors.initials: H
authors.lastname: Nagase
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Makari
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Miyake
authors.forename: Satoshi
authors.initials: S
authors.lastname: Oshima
authors.forename: Kimimasa
authors.initials: K
authors.lastname: Ikeda
authors.forename: Shohei
authors.initials: S
authors.lastname: Iijima
authors.forename: Nobuteru
authors.initials: N
authors.lastname: Kikkawa
authors.forename: Masayuki
authors.initials: M
authors.lastname: Mima
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Demizu
authors.forename: Nobukazu
authors.initials: N
authors.lastname: Fuwa
mesh_terms: D001707:Biopsy, Needle; D005260:Female; D063193:Heavy Ion Radiotherapy / Q000009:adverse effects; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology / Q000532:radiotherapy*; D008875:Middle Aged; D009367:Neoplasm Staging; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome