Table 3 Intraoperative frozen biopsy and type of surgery

1

Neoplasm adhered to thyroid to form a firm mass which also enclosed the internal jugular vein.

Poorly differentiated squamous carcinoma

Anterior cervical neoplasm biopsy^a

2

Neoplasm attached to thyroid and invaded the right recurrent laryngeal nerve. (Figure 3)

Highly differentiated squamous carcinoma (Figure 4)

Anterior cervical neoplasm biopsy^a

3

Neoplasm was cystic with integrated envelope and its central cavity communicated with esophagus.

Zenker’s diverticulum^b

Excision and repair

4

Neoplasm protruded from esophagus with food remains in it.

Zenker’s diverticulum^c

Excision and repair

5

Neoplasm can be touched from esophageal outer membrane and the texture was soft.

Zenker’s diverticulum^d (Figure 5)

Excision and repair

6

Neoplasm was pouch-like and communicated with esophageal pyriform sinus.

Zenker’s diverticulum^e

Excision and repair

7

Neoplasm compressed the left laryngeal recurrent nerve.

Zenker’s diverticulum^f

Excision and repair