[Extrapulmonary small cell carcinoma in 52 patients].
OBJECTIVE
The majority of small cell carcinoma occurs in the lung. Extrapulmonary small cell carcinoma (ESCC) has been recognized as a clinicopathologic entity distinct from small cell carcinoma of the lung. The study was to investigate the clinical characteristics, therapy, and prognosis of ESCC.


METHODS
The medical records, from Jan. 1985 to Dec. 2005, of 53 patients with pathologically proved ESCC were analyzed retrospectively.


RESULTS
Of the 53 patients, 39 were men and 14 were women, with the median age of 53 years (range, 27-76 years). Of the 53 cases of ESCC, 33 (62.3%) were detected in the esophagus, 5 in the cervix, 4 in the larynx, 3 in the pharynx, 2 in the upper sinus, 2 in the rectum and sublingual gland, 1 in the thyroid gland, 1 in the pleura, and 1 in the liver. Forty patients (75.5%) had limited disease (LD) and 13 (24.5%) had extensive disease (ED). Patients with ED mostly received platinum-based chemotherapy, for which the response rate was 69.2%. Patients with LD were treated with a variety of therapeutic modalities: 7 were treated with surgery plus radiochemotherapy, 3 with surgery plus radiotherapy, 18 with surgery plus chemotherapy, 6 with radiotherapy plus chemotherapy, 4 with radiotherapy alone, and 2 with chemotherapy alone. The median survival time (MST) was 20 months for all patients, and the 1-and 3-year survival rates were 41.3% and 31.4%. MST for patients with ED and LD were 15 months and 26 months, respectively, and 1-and 3-year survival rates were 51.1% vs. 14.4%, and 42.5% vs. 0% (P=0.017 ).


CONCLUSIONS
ESCC is identified in various sites, with the most common primary site being the esophagus. Multimodality therapy has become increasingly used for the majority of patients with LD-ESCC. Combination chemotherapy has been a major treatment for patients with ED-ESCC. Generally, the prognosis of LD-ESCC is significantly superior to ED-ESCC.
Yuan
Zhong-Yu
ZY
State Key Laboratory of Oncology in South China, Guangzhou, Guangdong, 510060, P. R. China. oncoloyzy2000@163.com
Guan
Zhong-Zhen
ZZ
Zhou
Zhong-Mei
ZM
Xia
Yi
Y
Huang
Wan-Zhong
WZ
Yang
Xiu-Li
XL
D000328:Adult; D000368:Aged; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D018288:Carcinoma, Small Cell / Q000188:drug therapy / Q000532:radiotherapy / Q000601:surgery; D003037:Cobalt Radioisotopes; D003131:Combined Modality Therapy; D004938:Esophageal Neoplasms / Q000188:drug therapy / Q000532:radiotherapy / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007822:Laryngeal Neoplasms / Q000188:drug therapy / Q000532:radiotherapy / Q000601:surgery; D008297:Male; D008875:Middle Aged; D010315:Particle Accelerators; D011882:Radiotherapy, High-Energy; D012189:Retrospective Studies; D015996:Survival Rate; D016896:Treatment Outcome; D002583:Uterine Cervical Neoplasms / Q000188:drug therapy / Q000532:radiotherapy / Q000601:surgery
D003037:Cobalt Radioisotopes