Abstract
The author reports postoperative results of a series of 340 cases of laryngeal cancer. An anatomical classification suggested by Tsukamoto-Takeda has been adopted:
I. Cancer of the endolarynx
1) inferior type
a) cordal cancer
b) subglottic cancer
2) superior type
a) cancer of the ventricular band
b) cancer of the laryngeal vestibule
3) intermediate type-mixed
II. Epilaryngeal cancer
1) antero-superior type: tumors arising from the supraepiglottis
2) lateral type: tumors arising from the aryepiglottic and pharyngo-epiglottic fold.
3) postero-inferior type: tumors arising from the arytenoid region.
III. Epiesophageal cancer: tumos arising from the pyriform sinus or post-cricoid area.
From the technical standpoint of laryngectomy performed, cases are divided into two groups.
The first group consists of 170 cases that were operated prior to Sept. 1953. The operation was simple laryngectomy without neck dissection or removal of the pre-epiglottic space The results are as follows:
died of other causes 10
died of recurrence 61
free of cancer 99 (61.9%)
The second group consists of 170 cases that were operated in the period from Sept. 1953 to Sept., 1958 in which one stage laryngectomy with removal of pre-epiglottic space together with hyoid bone was performed on 136 cases, prophylactic neck dissection was performed on 116 cases (positive microscopic metastases 29 cases) and therapeutic neck dissection was performed on 39 cases. The results are as follows:
died of other causes 4
died of recurrence 20
free of cancer 146 (88%)
The author mentioned further of histological grading of malignancy and clinical staging of all cases and relation between these and postoperative results.
