Ovarian mucinous tumour arising in mature cystic teratoma and associated with pseudomyxoma peritonei: report of two cases and comparison with ovarian involvement by low-grade appendiceal mucinous tumour.

Aims: It is currently accepted that primary ovarian tumours rarely, if ever, give rise to mucinous ascites/pseudomyxoma peritonei (PMP) which most commonly results from the intra-abdominal spread of an appendiceal mucinous neoplasm. However, primary ovarian mucinous tumours of appendiceal type arising within mature cystic teratomas appear to represent an exception to this rule. In this report two further examples of this rare tumour are described, and the immunohistological phenotype including expression of MUC proteins is compared with secondary ovarian involvement by low-grade appendiceal mucinous neoplasm.

Karyomegalic nephropathy: an uncommon cause of progressive renal failure.

Background: Karyomegalic nephropathy, first identified in 1974, represents an increasingly recognized, but perhaps underdiagnosed condition associated with interstitial nephritis. It undoubtedly leads to end-stage renal disease requiring renal support.

Methods And Results: We present a series of six cases of karyomegalic nephropathy.