Ovarian germ cell tumors are a histologically diverse group of neoplasms with a common
origin in the primitive germ cell. The vast majority are represented by mature cystic teratoma …

Fetus in fetu (FIF) is an extremely rare anomaly featuring a monozygotic, diamniotic,
parasitic twin, enclosed within its host twin. It is characterized by the presence of vertebrae …

Fetiform teratoma, also recognized as a homunculus, is a largely uncommon form of mature
cystic teratoma. Here, we present the case of a 17-year-old single female who presented to …

Fetus in fetus (FIF) represents an abnormal embryogenesis in monozygotic diamniotic twin
gestation. It has been described in less than 200 cases worldwide. Differential diagnosis …

This chapter presents a specific anatomical site-centered review of neoplastic processes of
different lineages. Each section presents updated information covering clinical features …

Background There is an ambiguous and controversial line between fetiform teratoma and
fetus in fetu (FIF) as differential diagnoses of a fetiform mass. Classically, the presence of …

This issue of Surgical Pathology Clinics, Guest Edited by Dr. Brooke Howitt, will focus on
practical issues and updates around Gynecologic Pathology. This issue is one of four …