The rates and CT patterns of locoregional recurrence after resection surgery of lung cancer: correlation with histopathology and tumor staging.
The purpose of our study was to assess the rates and CT patterns of locoregional recurrence after resection surgery of lung cancers according to histopathology and tumor staging. Three hundred and seventy nine patients who underwent lung resection surgery due to lung cancer in a recent 6 year period were followed up with CT (at 3, 6, 12, 18, 24 months, and then annually after surgery) for evaluation of locoregional tumor recurrence (analysis of hilar or mediastinal lymph nodes and surgical margin including bronchial stump, pleura, and chest wall). The recurrence rates and CT patterns were compared in terms of underlying histopathology and tumor staging. Of 379 patients, 75 (20%) patients had locoregional recurrences. The recurrence rates were higher in squamous cell carcinoma (39/190, 21%) than adenocarcinoma (24/140, 17%) (P = 0.012). The patterns of recurrence in 75 patients were hilar-mediastinal lymph node enlargement (n = 39, 52%), ipsilateral pleural lesion (n = 24, 32%), chest wall lesion (n = 13, 17%), bronchial stump lesion (n = 8, 11%), and bronchial extension including the trachea (n = 3, 4%). Bronchial stump recurrence was seen only in squamous cell carcinoma. Bronchioloalveolar carcinoma did not show any evidence of locoregional recurrence. Pleural (P = 0.0016) and mediastinal nodal (P = 0.001) recurrence, respectively, were more common in N2 than N0 cancers. Chest wall recurrence rates were higher with higher T staging (P < 0.001). The locoregional recurrence of lung cancer occurs in about one fifth of patients who undergo curative resection and is more common in squamous cell carcinoma than in adenocarcinoma. Recurrent patterns are diverse and different according to histopathologic type and pathologic staging of lung cancer.
Jang
Kyung Mi
KM
Department of Radiology, Sungyunkwan University, School of Medicine, Seoul, Korea.
Lee
Kyung Soo
KS
Shim
Young Mog
YM
Han
Daehee
D
Kim
Hojoong
H
Kwon
O Jung
OJ
Kim
Jhingook
J
Kim
Tae Sung
TS
D000230:Adenocarcinoma / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D002294:Carcinoma, Squamous Cell / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015994:Incidence; D008168:Lung / Q000473:pathology; D008175:Lung Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000453:epidemiology*; D009367:Neoplasm Staging; D012189:Retrospective Studies; D013997:Time Factors; D014057:Tomography, X-Ray Computed