Mode of parotid involvement in external auditory canal carcinoma.
Until now, little was known about the mode of parotid involvement in external auditory canal (EAC) carcinoma. The incidence of parotid node metastasis and direct parotid invasion was examined in patients with EAC carcinoma. The study comprised 11 patients with squamous cell carcinomas (SCC) and 10 patients with adenoid cystic carcinomas (ACC). A retrospective review of the surgical specimens was undertaken with specific reference to parotid node metastasis and parotid invasion. Parotid node metastasis was noted only in two cases of advanced staged SCC, whereas none of the ACC patients showed parotid node metastasis. Direct parotid invasion occurred only in advanced staged SCC, however, it did occur in early stage ACC. Our data indicated that elective parotidectomy for control of occult parotid node metastasis is necessary only in advanced SCC carcinoma, whereas parotid management to secure adequate safety margins is mandatory for advanced SCC and all cases of ACC.
Choi
Jae Young
JY
Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea.
Choi
Eun-Chang
EC
Lee
Ho-Ki
HK
Yoo
Jong-Bum
JB
Kim
Sun Goo
SG
Lee
Won-Sang
WS
D000328:Adult; D000368:Aged; D003528:Carcinoma, Adenoid Cystic / Q000473:pathology* / Q000556:secondary / Q000601:surgery; D002294:Carcinoma, Squamous Cell / Q000473:pathology* / Q000556:secondary / Q000601:surgery; D004424:Ear Canal / Q000473:pathology* / Q000601:surgery; D004428:Ear Neoplasms / Q000473:pathology* / Q000556:secondary / Q000601:surgery; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009367:Neoplasm Staging; D010306:Parotid Gland / Q000473:pathology* / Q000601:surgery; D012189:Retrospective Studies; D012468:Salivary Gland Neoplasms / Q000473:pathology* / Q000556:secondary / Q000601:surgery; D017211:Treatment Failure