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Ovarian fibroma rarely occurs in prepubertal girls. We report an ovarian fibroma in a 7-month-old female infant presenting as a right abdominal mass. The tumour was composed of oval-to-spindle cells forming interlacing fascicles and intermingling with collagen fibres. Immunohistochemically, the tumour cells were weakly positive for estrogen receptor and progesterone receptor but negative for inhibin. To the best of our knowledge, this is the youngest case of ovarian fibroma up-to-date in the English literature. Because Gorlin’s syndrome was not present in the patient’s family, other factors such as germline or somatic mutations may predispose the occurrence of this ovarian fibroma in infancy. [ABSTRACT FROM AUTHOR]

A 14-year-old girl underwent left oopherectomy for a multicystic ovarian mass. Histology revealed this to be an intestinal type mucinous borderline tumour (IMBT). In view of this, a semi-urgent laparoscopic appendicectomy was carried out. The appendix was histologically normal. IMBT of the ovary is a mucinous tumour with atypical proliferation of the goblet cell containing epithelium. It is known to occur simultaneously with tumours of the appendix. Paediatric surgeons need to be aware of this rare tumour and when operating on any ovarian pathology should always inspect the peritoneal cavity for mucinous deposits and examine the appendix. [ABSTRACT FROM AUTHOR]