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Ref. | Diagnosis | Tissue Structure | Cell morphology | Nucleus | Cytoplasm | Invasion | Tumor stroma | Proven metastasis |
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Graham et al. 2017 [6] | Adenocarcinoma | Papillary and gland-like | — | Small, punctate, and round nuclei | Pale eosinophilic | — | — | ILN |
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Pindoria et al. 2016 [7] | Papillary cystadenocarcinoma | Papillary structures projecting into cystic spaces; cystic and solid sheets | Cuboid to columnar, polygonal | — | Pale eosinophilic to clear | Spermatic cord | — | Ipsilateral testis |
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Urabe et al. 2016 [13] | Adenocarcinoma | Nest-like and tubular pattern; lobulated proliferation | — | — | — | — | Fibrotic and inflammatory | No |
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Gupta et al. 2015 [8] | Mucinous adenocarcinoma | Cystic spaces; variably sized tubular glands with intraluminal papillae; complex tubulocystic structures with mucin; calcification and necrosis | Frank goblet cell differentiation | Nuclear stratification, moderate nuclear pleomorphism, coarse chromatin, and frequently prominent nucleoli; identified mitosis | Intracytoplasmic mucin | Periepididymal soft tissue, testis, rete testis and spermatic cord | — | No |
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Nozawa et al. 2014 [5] | Clear cell papillary cystadenocarcinoma | Solid nests and tubular structure; necrosis | — | Small round nuclei (a part); nuclear atypia and occasional mitosis (a part) | Clear to eosinophilic | Testicular capsule and surrounding soft tissues | — | No |
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Staník et al. 2012 [9] | Poorly differentiated adenocarcinoma | Microacinar and solid, sporadically cribriform; no necrosis | — | Mainly round with finely dispersed chromatin, with sporadic nuclei variability such as hyperchromasia, prominent nucleoli and monstrous nuclei; high mitosis | Large clear vacuoles without evident mucus secretion | Testis | Fibrous septa | RPLN |
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Soumarová et al. 2012 [10] | Adenocarcinoma | Tubular, papillary, tubulopapillary and cystopapillary structures alternating with solid structures | Cuboid, columnar and epitheloid | High atypical mitosis | Some contain clear cytoplasm | Endolymphatic, endovenous, (peri)endoneural and pseudocapsule tumour permeation | Pseudocapsules and incomplete fibrous septa
| RPLN |
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Arisan et al. 2004 [14] | Small differentiated adenocarcinoma | Irregular adenoid structures; solid spherical or papillary pattern proliferation | Big | Pleomorphic vesicular nucleus, definite nucleolus; some mitosis | — | Seminal cord | — | No |
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Hayashi et al. 2003 [16] | Moderately differentiated adenocarcinoma | Cord- and nest-like or complex glandular pattern; necrosis | — | Hyperchromatic, pleomorphic; increased mitosis | — | Testis | — | No |
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Chauhan et al. 2001 [11] | Poorly differentiated adenocarcinoma | — | — | — | A strong PAS staining | Epididymal tubules | — | RPLN |
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Ganem et al. 1998 [3] | Well differentiated adenocarcinoma | Microglandular | — | — | — | Perineural space | — | No |
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Jones et al. 1997 [4] | Adenocarcinoma | NO. 1 + 2, variably sized, simple tubules or complex tubular glands with intraluminal papillae; necrosis (in one patient) NO. 3 + 4,large cysts contain lightly eosinophilic secretions and had complex, arborizing papillary structures projecting into them | NO. 1 + 2,cuboidal or rarely columnar NO. 3 + 4,columnar
| NO. 1 + 2,mildly to moderately atypical nucleus, visible nucleoli; infrequent mitosis NO. 3 + 4,infrequent mitosis
| NO. 1 + 2,clear or rarely lightly amphophilic NO. 3 + 4,lightly amphophilic, eosinophilic or clear cytoplasm | NO. 1 + 2,epididymal muscular wall, periepididymal soft tissue, or both. NO. 3 + 4,—
| NO. 1 + 2,focally desmoplastic stroma NO. 3 + 4,—
| NO. 1 + 4,RPLN NO. 2 + 3,No |
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