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#Indistinct cell borders | #Indistinct cell borders | ||
#Mitoses - common. | #Mitoses - common. | ||
#Variable architecture: | #Variable architecture:<ref name=pmid24503753>{{Cite journal | last1 = Kao | first1 = CS. | last2 = Ulbright | first2 = TM. | last3 = Young | first3 = RH. | last4 = Idrees | first4 = MT. | title = Testicular embryonal carcinoma: a morphologic study of 180 cases highlighting unusual and unemphasized aspects. | journal = Am J Surg Pathol | volume = 38 | issue = 5 | pages = 689-97 | month = May | year = 2014 | doi = 10.1097/PAS.0000000000000171 | PMID = 24503753 }}</ref> | ||
#* | #*Solid (predominant in ~55% of cases). | ||
#*Glandular. | #*Glandular (predominant in ~17% of cases). | ||
#* | #*Papillary (predominant in ~11% of cases). | ||
#*Nested. | |||
#*Micropapillary. | |||
#*Anastomosing glandular. | |||
#*Sieve-like glandular. | |||
#*Pseudopapillary. | |||
#*Blastocyst-like. | |||
#*Embryoid bodies - ball of cells in surrounded by empty space on three sides. | #*Embryoid bodies - ball of cells in surrounded by empty space on three sides. | ||
Notes: | Notes: | ||
*Cytoplasmic staining variable (eosinophilic to basophilic). | *Cytoplasmic staining variable (eosinophilic to basophilic). | ||
*[[Syncytiotrophoblasts]] commonly seen (~40-50% of cases<ref name=pmid24503753/>). | |||
DDx: | DDx: | ||
*[[Mixed germ cell tumour]]. | *[[Mixed germ cell tumour]]. | ||
*[[Yolk sac tumour]]. | *[[Yolk sac tumour]]. | ||
*[[Seminoma]]. | |||
===Images=== | ===Images=== |
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