Primary Peritoneal Carcinoma Initially Presenting as Atypical Cervical Lymphadenopathy

In pursuit of the primary

Extraovarian primary peritoneal carcinoma (EOPPC) is a rare tumour of the peritoneum that shares many features with serous ovarian carcinoma because of a common embryological origin. We report a case of EOPPC presenting with a malignant pleural effusion.https://bit.ly/3GMuKgL

Rare clinical manifestations of primary peritoneal serous carcinoma presenting as colorectal cancer: A report of two cases

OBJECTIVE

To report two cases of for primary peritoneal serous carcinoma (PPSC) to present with gastrointestinal manifestations that mimic colorectal cancer.

CASE REPORT

There were two patients with initial presentations of fatigue with iron deficiency anemia, and tenesmus with bloody stool. Tumors of the ascending colon and rectum were detected by colonofiberoscope, and pathologic reports of tumor biopsies revealed adenocarcinoma of suspected gynecologic origin. Both patients underwent optimal debulking surgery without macroscopic residual tumor, and then received adjuvant carboplatin and paclitaxel chemotherapy with bevacizumab.

CONCLUSIONS

PPSC can clinically present like primary colorectal carcinoma. The differential diagnosis requires special staining of several markers for tumor tissues.

Clinical characteristics of primary peritoneal carcinoma patients: a single-institution experience involving 8 patients

Primary peritoneal carcinoma (PPC) is treated similarly to advanced epithelial ovarian carcinoma (aEOC); however, the standard approach for the management of PPC is controversial. The objective of this study was to evaluate the clinical features and prognosis of those patients. A retrospective analysis was performed of eight patients with PPC between January 2008 and December 2015. Clinicopathologic parameters, the diagnostic modality, treatment, and oncologic outcome were analyzed. The median age at the time of diagnosis was 72.5 years (range: 55–79), with a median follow-up of 26.5 months (range, 5–74). Most of the PPC developed with carcinomatosis peritonei involving ascites, while some cases developed sporadically in the peritoneal or extraperitoneal cavity without ascites. The most common initial symptom was abdominal fullness, and other symptoms were inguinal tumor, paralysis of the extremities, and respiratory disorder. The preoperative CA125 value was elevated in all patients. In four patients who did not undergo primary surgery, the final diagnoses were determined by the ascites cytology and radiological image. Initial or interval debulking surgery was performed in only two patients. All patients were treated with paclitaxel or docetaxel plus carboplatin. Five showed a complete response (CR), and one showed a partial response (PR). Among the five patients with CR, the median progression-free and overall survival periods were 15 (12–26) and 41.5 (32–74) months, respectively. Three patients without carcinomatosis peritonei showed a relatively favorable prognosis. The management of PPC is generally consistent with that of aEOC; however, in atypical cases, the treatment method should be considered individually.