28例口腔基底样鳞状细胞癌的临床病理分析

doi:10.19723/j.issn.1671-167X.2022.01.010

Abstract

Abstract:

Objective: To investigate the clinicopathologic features and prognostic factors in oral basaloid squamous cell carcinoma. Methods: Retrospective analysis of oral basaloid squamous cell carcinomas patients who underwent tumor resection during the period from January 2002 to December 2020 in the authors’ hospital, especially the clinicopathologic characteristics of 28 cases with confirmed diagnosis and follow-up data. Immunohistochemistry was performed to define the helpful markers for differentiation diagnosis. The factors influencing the prognosis were evaluated based on Kaplan-Meier method. Results: The tongue and mouth floor (11 cases, 39.3%) were the most frequently involved sites, followed by gingiva (6 cases, 21.4%), buccal (5 cases, 17.9%), palate (4 cases, 14.3%), and oropharynx (2 cases, 7.1%). The majority of basaloid squamous cell carcinomas were in advanced stage, with 12 cases in stage Ⅱ and 16 cases in stages Ⅲ-Ⅳ. Twelve of 28 patients were identified to have cervical lymph node metastasis, which was confirmed by histopathological examination. The incidence rate of lymph node metastasis was 42.9% (12/28). Nine tumors recurred, with one metastasized to the lung. At the meantime, the 28 conventional squamous cell carcinomas were matched with the same stage, among which 13 cases were identified with cervical lymph node metastasis. The incidence rate of lymph node metastasis was 46.4% (13/28). Five cases recurred, with two cases that metastasized to the lung and one to the brain. The 5-year overall survival rates of the basaloid squamous cell carcinoma and conventional squamous cell carcinoma patients were 54.6% and 53.8%, respectively. Histopathologically, basaloid cells consisted of tumor islands without evident keratinization but frequently with comedo-like necrosis within the tumor islands. CK5/6 and P63 exhibited strongly positive in all the 28 cases, whereas neuroendocrine markers, CgA and Syn, were negative. Eight cases positively expressed P16; one case showed focal SOX10 positive but CK7 negative. Conclusion: The majority of oral basaloid squamous cell carcinomas present in advanced stage with a high tendency to lymph node metastasis, but the overall survival rates are not significantly different from conventional squamous cell carcinomas matched with the same stage. The human papilloma virus (HPV),as HPV-positivity rate is high, correlates to good prognosis. In addition, CK7 & SOX10 immunohistochemistry could contribute to differential diagnosis for basaloid squamous cell carcinoma with solid adenoid cystic carcinoma.

Key words: Squamous cell carcinoma, Adenoid cystic carcinoma, P16, Human papilloma virus

CLC Number:

R780.2

ZHOU Chuan-xiang,ZHOU Zheng,ZHANG Ye,LIU Xiao-xiao,GAO Yan. Clinicopathological study in 28 cases of oral basaloid squamous cell carcinomas[J].Journal of Peking University (Health Sciences), 2022, 54(1): 62-67.

Figures/Tables 4

Table 1

The clinicopathologic features of the patients with BSCC and conventional SCC"

Case no.	BSCC						Case no.	SCC
Case no.	Age^a/ gender	Location	Stage	LN metastasis	Follow-up	P16 IHC	Case no.	Age^a/ gender	Location	Stage	LN metastasis	Follow-up	P16 IHC
1	77/M	Palate	Ⅲ	+	Dead/3 y	-	1	67/M	Palate	Ⅲ	-	Alive/5 y	+
2	71/M	Tongue	Ⅱ	-	Alive/11 y	+	2	73/M	Tongue	Ⅱ	-	Alive/4 y	-
3	57/M	Floor of mouth	Ⅳ	+	Alive/9 y	+	3	48/M	Floor of mouth	Ⅳ	+	Alive/4 y	+
4	70/M	Gingiva	Ⅱ	-	Alive/6 y	+	4	68/F	Gingiva	Ⅱ	-	Alive/5 y	-
5	62/M	Oropharynx	Ⅱ	-	Dead/4 y	-	5	38/M	Oropharynx	Ⅱ	-	Alive/3 y	-
6	75/F	Buccal	Ⅱ	-	Alive/5 y	-	6	81/F	Buccal	Ⅱ	-	Dead/2.5 y	-
7	60/M	Gingiva	Ⅱ	-	Dead/1 y	-	7	46/M	Gingiva	Ⅱ	-	Alive/4 y	-
8	33/F	Palate	Ⅱ	-	Alive/5 y	+	8	71/M	Palate	Ⅱ	-	Alive/2 y	-
9	58/M	Gingiva	Ⅱ	-	Alive/5 y	+	9	62/M	Gingiva	Ⅱ	-	Dead/2 y	+
10	60/M	Gingiva & buccal	Ⅳ	-	Dead/2 y	-	10	79/M	Gingiva	Ⅳ	+	Dead/4 y	-
11	52/M	Floor of mouth & Tongue	Ⅳ	+	Alive/3 y	-	11	54/M	Floor of mouth	Ⅳ	+	Alive/4 y	-
12	67/M	Gingiva	Ⅳ	-	Alive/3 y	-	12	71/F	Gingiva	Ⅳ	+	Dead/1.5 y	-
13	41/M	Palate	Ⅲ	+	Alive/2 y	-	13	56/M	Palate	Ⅲ	-	Alive/2 y	-
14	53/M	Floor of mouth	Ⅳ	+	Alive/1.5 y	-	14	60/M	Floor of mouth	Ⅳ	+	Dead/3 y	-
15	68/M	Tongue	Ⅱ	-	Alive/1 y	-	15	64/F	Tongue	Ⅱ	-	Alive/4 y	-
16	60/M	Floor of mouth	Ⅲ	+	Alive/1 y	-	16	74/M	Floor of mouth	Ⅲ	-	Dead/1 y	-
17	62/M	Tongue	Ⅳ	+	Dead/2 y	-	17	71/F	Tongue	Ⅳ	+	Dead/2.5 y	-
18	51/M	Gingiva	Ⅳ	-	Alive/1 y	-	18	73/F	Gingiva	Ⅳ	+	Dead/2.5 y	+
19	67/M	Floor of mouth	Ⅱ	-	Alive/1 y	-	19	52/M	Floor of mouth	Ⅱ	-	Alive/4 y	-
20	58/M	Buccal	Ⅲ	+	Alive/2 y	-	20	43/M	Buccal	Ⅲ	+	Alive/3 y	+
21	39/M	Tongue	Ⅱ	-	Alive/1.5 y	-	21	66/M	Tongue	Ⅱ	-	Alive/5 y	-
22	34/M	Palate	Ⅲ	+	Alive/4 y	+	22	62/M	Palate	Ⅲ	+	Alive/3 y	-
23	57/M	Oropharynx	Ⅳ	-	Alive/1 y	+	23	64/M	Oropharynx	Ⅳ	+	Dead/1 y	-
24	58/M	Buccal	Ⅱ	-	Alive/2.5 y	-	24	66/M	Buccal	Ⅱ	-	Dead/3 y	-
25	66/M	Buccal	Ⅳ	+	Dead/3 y	-	25	53/M	Buccal	Ⅳ	+	Alive/3 y	+
26	44/F	Tongue	Ⅲ	+	Dead/3 y	-	26	52/F	Tongue	Ⅲ	+	Alive/4 y	-
27	47/M	Gingiva	Ⅱ	-	Alive/3 y	+	27	72/M	Gingiva	Ⅲ	-	Dead/2 y	-
28	50/M	Floor of mouth	Ⅳ	+	Dead/2 y	-	28	76/M	Floor of mouth	Ⅳ	+	Dead/2 y	-

Table 1

Figure 1

Figure 2

Figure 3

References 24

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