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| Code | Diagnosis | Comment | Score |
| anonymous | Papillary serous adenocarcinoma (100%), metastatic or primary peritoneal | To look for primary tumour in female genital tract and other sites. | 100 |
| anonymous | Extraovarian peritoneal serous papillary carcinoma, EPSPC | Immunostaining for Calretinin to rule out malignant mesothelioma | 100 |
| anonymous | Primary peritoneal serous carcinoma. | Need to confirm the absence of tumour in ovaries (despite normal in size) and endometrium. | 100 |
| anonymous | Primary peritoneal serous adenocarcinoma | Immunostaining for WT-1 (positive). | 100 |
| anonymous | Papillary serous carcinoma(consistent with primary peritoneum type). 100% | To exclude a primary in the ovary and endometrium clinically. Mesothelioma is a valid though remote differential. Clinical correlation is prudent. Although there is significant immnohistochemical overlap between papillary serous carcinoma and mesothelioma, mesothelioma is more likely to be CEA-, BerEP4-, calretinin+, thrombomodulin+, CK5/6+. | 100 |
| anonymous | Serous papillary carcinoma. (100%) | To look for primary, e.g. status of uterus and cervix. If none, could be primary peritoneal serous carcinoma. Do CA125, WT1 and S100 protein to help to confirm. Do calretinin to exclude mesothelioma. | 100 |
| anonymous | Primary peritoneal serous adenocarcinoma 100% | nil | 100 |
| anonymous | Serous adenocarcinoma (100%) | Since the ovaries are normal and upon exclusion of primary from the uterine cavity, primary peritoneal origin has to be considered. | 100 |
| anonymous | Malignant peritoneal tumor: Peritoneal serous papillary carcinoma? Malignant mesothelioma? Metastatic adenocarcinoma? | nil | 90 |
| anonymous | Infiltration by ADENOCARCINOMA (please see comment) (100%) | The histologic features are consistent with serous carcinoma. Metastatic serous carcinoma of female genital tract and other primary sites like gastrointestinal tract and pancreas need to be excluded. Primary peritoneal serous carcinoma is also a possibility. Please correlate with clinical and operative findings. | 100 |
| anonymous | High-grade serous adenocarcinoma 100% | CA125, WT1, CK7/20 for serous phenotype (CA125+ WT1+ CK7+ CK20-) Histological assessment of ovaries to determine primary ovarian vs peritoneal tumour Further blocks to exclude carcinosarcomatous foci (MMMT) | 100 |
| anonymous | Serous adenocarcinoma | Either primary peritoneal or metastasis from genital tract. Likely to be primary if both ovaries are grossly normal. | 100 |
| anonymous | Adenocarcinomatous deposits 50% Mesothelioma 50% | nil | 40 |
| anonymous | Primary peritoneal serous adenocarcinoma. Probability: 100% | nil | 100 |
| anonymous | Serous adenocarcinoma 100% | Correlate with clinical findings to determine whether primary peritoneal or metastatic adenocarcinoma | 100 |
| anonymous | serous adenocarcinoma (100%) | Correlate with clinical findings for peritoneal or endometrial primary. | 100 |