Since the publication of this Pathology II (Special) Textbook. Since the publication of Pathology I (General) Textbook in 2002, the desire to publish Pathology II (Special) Textbook has been determined, but various obstacles have occurred so that it can only be published now. The rapid development of science has caused the manuscript that was almost ready to be revised again. With a pre-graduate education system that uses a modular system, this textbook is expected to be able to help students every time they study the modules, because knowledge today is no longer obtained from lectures alone but must be read by themselves. We would like to thank all parties who have helped so that this Pathology II (Special) Textbook can finally be published, especially to the teaching staff, editors and employees who were assigned to compile the manuscript. Hopefully this book can be useful and be proof of the dedication of the Teaching Staff of the Department of Anatomical Pathology, FKUI, in the development of science in general and Anatomical pathology in particular.