"Ultrasound "
"T1: typically low signal 6"
"T2: typically high signal 6"
"T1 C+ (Gd): may show enhancement (higher sensitivity with 5 min delayed sequences) 13"
"The PSOGI classification divides PMP into four categories based on histopathology 12:"
"The PSOGI classification divides PMP into four categories based on histopathology 12:"
"high-grade PMP with signet ring cells: high-grade features plus the presence of signet ring cells"
Expected headings
"Ultrasound "
"Signal characteristics"
"The remarkable feature of pseudomyxoma peritonei is that this neoplastic, progressive process often arises from a seemingly benign or well-differentiated primary tumour 2. However, once there is intraperitoneal spread, the mucinous deposits tend to follow routes of normal peritoneal fluid flow, spreading along the pelvis, paracolic gutters, liver capsule, and omentum, while often sparing mobile organs, e.g. small bowel 9,10."
"Pseudomyxoma peritonei is most commonly due to invasion or rupture of the appendix from a mucin-secreting appendiceal tumour. Much less commonly, mucinous tumours of the colon, rectum, stomach, pancreas, and urachus are implicated 7-9. There is some ongoing contention as to whether primary ovarian tumours are a frequent source in their own right, or whether in these cases the appendix is the primary site and the ovarian lesion is metastatic 1,2."
"may show scalloping of the liver, spleen and at times other organs 14"