肿瘤大约10cm，囊实性，散在菜花样乳头

膨胀性浸润 mean confulent growth in size 3 or 5 mm. It means invasive ca

上皮内癌 if foci of mucinous borderline tumor show high nuclear grade (grade 3), you can dx mucinous borderline tumor with focal intraepithelial ca. It is not invasion.

there is no the concept of 上皮内癌 in serus or endometrioid borderline tumor.

Need 1 slide per cm for ovarian tumor.

treatment is the duty of gyncologists.  

浆液性乳头状腺癌

卵巢粘液性囊性乳头状癌（颈管型）

Good point

粘液性乳头状囊腺癌，部分区域呈交界性。考虑患者16岁，如果肿瘤表面包膜完整光滑，无乳头，腹水细胞学未见肿瘤细胞，在临床处理上可以保守些。

1. Firstly, need to rule out metastatic ca. CK7/CK20/CDX2/PAX8 stains can be helpful. Of cause clinical correlation with imaging is needed.

2. If it is ovarian tumor, it is a mucinous tumor. Question is that it is a borderline tumor or carcinoma.

3. Check carefully to see if microinvasion is present.

4. It is not like stromal breakdown invasion. Need to see if it is enough to call expansile invasion.

5. Criteria of  expansile invasion: Some authors suggested the focus be at least 3 mm, or 5 mm or 10mm2; but some authors have no minimal size criteria.

浆乳癌

My feeling is that mucinous carcinoma with expansile invasion.

Of cause, need to review all slides for definite dx.

Generally speaking, staging is needed even though for ovarian borderline tumor

Should have many sections

究 结：borderline or carcinoma?

Anyway intraepithelial carcinoma is not present in this case

浆液性乳头状腺癌

卵巢浆液-黏液性乳头状囊腺癌？

怎么看都是粘液型，问题是交界还是癌？

粘液性乳头状囊腺癌

浆液性乳头状囊腺癌

本例无论年龄大小，从图片看足够癌了，是膨胀性浸润性生长。宫颈型黏液性乳头状囊腺癌。