Multiple schwannomas with pseudoglandular element synchronously occurring under the tongue: A case report

Table 1 Timeline of this case

Events	Timeline	Description
Consultation	2018-01-03	First outpatient
Physical exam	2018-01-10	Gross and Microscopic examinations, CT
Surgical operation	2018-02-07	An intraoral approach under general anesthesia
Postoperative examination	2018-02-10	3 d after the operation
Follow-up	2019-07-21	15-mo follow-up visit, no recurrence

CT: Computed tomography.

Table 2 Summary of schwannoma with pseudoglandular elements located outside the central nervous system, including the presented case

No.	Age/sex	Location of tumors and number	Size in cm	Follow-up	Ref.
1	60/F	Right forearm, one	1.1	6 mo, no recurrence	Deng et al[9]
2	34/F	Right index, one	Not described	Not described	Lisle et al[6]
3	37/M	Retrobulbar mass, one	1.5	10 yr, no recurrence	Chan et al[10]
4	31/F	Submandibular region, one	5.8	Not described	Chan et al[10]
5	24/F	Soft tissue of shoulder, one	2.5	Not described	Chan et al[10]
6	27/M	Parotid gland, one	3.5	Not described	Ide et al[11]
7	33/M	Cauda equine, one	3	18 mo, no recurrence	Ruggeri et al[12]
8	Not described	Scalp, one	Not described	Not described	Ud Din et al[8]
9	Not described	Retroperitoneum, one	Not described	Not described	Ud Din et al[8]
10	Not described	Thigh, one	Not described	Not described	Ud Din et al[8]
11	Not described	Popliteal fossa, one	Not described	Not described	Ud Din et al[8]
12	Not described	Toe, one	Not described	Not described	Ud Din et al[8]
13	53/M	Under the tongue, multiple (three)	The biggest was 4, and the smallest was 2.2	15 mo, no recurrence	Chen et al (the present case)

F: Female; M: Male.