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Ovarian tumours by incidence and risk of ovarian cancer, with adult granulosa cell tumour at right [7] Using next generation DNA sequencing, 97% of adult granulosa cell tumours were found to contain an identical mutation in the FOXL2 gene . This is a somatic mutation, meaning it is not usually transmitted to descendants.
A very rare tumour producing both ovarian (granulosa and/or theca) and testicular (Sertoli and/or Leydig) cells or tissues. Typically it consists of adult-type granulosa cells and Sertoli cells, [4] [5] but it has been reported with juvenile-type granulosa cells. [6] It has been reported to occur in the ovary usually, rarely in the testis. [7]
The granulosa cells are usually arranged haphazardly around the space. They are pathognomonic for granulosa cell tumors. Histologically, these tumors consists of monotonous islands of granulosa cells with "coffee-bean" nuclei. That same nuclear groove appearance noted in Brenner tumour, an epithelial-stromal ovarian tumor distinguishable by ...
Granulosa cell tumors are the most common sex-cord stromal tumors, making up 70% of cases, and are divided into two histologic subtypes: adult granulosa cell tumors, which develop in women over 50, and juvenile granulosa tumors, which develop before puberty or before the age of 30.
Spindle-shaped fibroblastic cells and abundant collagen. [11] Adult granulosa cell tumor: 1%: Almost 100%: Small, bland, cuboidal to polygonal cells in various patterns. [12] Other sex cord-stromal tumors 1%: Others include mainly juvenile granulosa cell tumor, thecoma and sclerosing stromal tumor [5] Secondary/metastatic) tumor 2%: 100%
Granular cell tumor is a tumor that can develop on any skin or mucosal surface, but occurs on the tongue 40% of the time. It is also known as Abrikossoff's tumor , [ 1 ] granular cell myoblastoma , [ 1 ] granular cell nerve sheath tumor , [ 1 ] and granular cell schwannoma . [ 1 ]