Gallbladder sarcomatoid carcinoma: Seven case reports

Table 4 Pathological diagnosis

	No recurrence		Recurrence or metastasis
	Case 1	Case 2	Case 3	Case 4	Case 5	Case 6	Case 7
Carcinoma	Adenocarcinoma	NM	NM	Adenosquamous	Adenosquamous	Adenocarcinoma	Adenocarcinoma
PCK	(+)	(+)	(+)	(+)	(+)	(+)	(+)
Cytokeratin	CK19+	CK7 (+), CK20 (-)	CK19 (focal+), CK7 (-)	CK7 (+), CK19 (+)	NT	CK7 (focal+), CK20 (focal+)	NT
EMA	NT	(+)	(focal +)	NT	NT	+	NT
Vimentin	NT	NT	NT	NT	NT	(focal +)	NT
Desmin	(-)	(-)	(-)	(-)	(-)	(-)	(-)
a-SMA	(-)	(-)	NT	(-)	(-)	(-)	(-)
Other positive markers		S-100 (±)		P63 (focal +)		CAM5.2 (focal +)
Other negative markers	Syn (-), CgA (-)			HCC (-), CD34 (-)		DOG1 (-), CD117 (-), CD34 (-)

NM: Not mentioned; NT: Not tested; PCK: Pan-cytokeratin.