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Pseudomyxoma Peritonei: Multidisciplinary Management

Rare gelatinous peritoneal disease requiring specialized cytoreductive surgery and HIPEC

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Onkoloji department. Book Appointment →

What is Pseudomyxoma Peritonei: Multidisciplinary Management?

Pseudomyxoma peritonei describes the syndrome of mucinous ascites and peritoneal implants, typically originating from appendiceal mucinous neoplasms in most cases.

Histologic classification distinguishes low-grade (acellular or low-grade mucinous neoplasm) from high-grade and signet-ring cell variants with prognostic implications.

Disease distribution follows characteristic redistribution patterns sparing small bowel surfaces while accumulating in greater omentum, pelvis and subdiaphragmatic spaces.

Differential diagnosis includes mucinous tumors of the ovary, colon, pancreas and stomach which may produce similar peritoneal disease.

Diagnosis combines imaging features (scalloping of liver and spleen, omental caking) with cytology, biopsy and immunohistochemistry.

Symptoms

Progressive abdominal distension and increasing girth over months to years.
Vague abdominal discomfort, bloating and early satiety.
New-onset hernia (umbilical or inguinal) containing mucinous material.
Bowel obstruction symptoms in advanced disease with nausea, vomiting and constipation.
Incidental finding during surgery for suspected appendicitis or ovarian mass.

Risk Factors

Underlying low-grade appendiceal mucinous neoplasm with rupture is the predominant cause.
Female sex with peritoneal disease may suggest ovarian primary requiring careful evaluation.
Prior appendectomy with appendiceal pathology missed at original surgery.
Family history of Lynch syndrome or other hereditary cancer syndromes in selected cases.
No clear environmental or lifestyle risk factors are established for this rare entity.

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Progressive abdominal distension without clear cause requires comprehensive evaluation.
  • Recurrent ascites with mucinous appearance on paracentesis warrants specialist referral.
  • New hernia containing mucinous material identified during repair needs oncologic consultation.
  • Incidental peritoneal implants found at surgery for other indications require frozen section and oncology input.
  • Patients with confirmed PMP benefit from prompt referral to specialized peritoneal surface malignancy centers for optimal management.

Treatment Methods

01
Cytoreductive surgery aiming for complete macroscopic disease removal is the foundation of treatment.
02
Hyperthermic intraperitoneal chemotherapy (HIPEC) following cytoreduction with mitomycin or oxaliplatin treats microscopic residual disease.
03
Systemic chemotherapy with fluoropyrimidine-based regimens may be considered for high-grade disease or unresectable cases.
04
Surveillance imaging and tumor marker monitoring following treatment guides detection of recurrence.
05
Multidisciplinary care at high-volume specialized centers, careful patient selection, comprehensive nutritional support and management of treatment-related complications including stoma care, lymphedema and chronic abdominal pain optimize long-term outcomes in this rare disease.

Which Department to Visit?

You can visit our Onkoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.