The Pathological Anatomy service is where cytologies, biopsies and surgical specimens are studied for diagnosis.

The samples taken from patients are sent to the Pathological Anatomy (PA) service, where microscopy, immunohistochemical and molecular studies are used to accurately diagnose each patient and offer the most suitable treatment. After the study, the Service issues a report that is stored in the Medical History and is used by clinicians to inform patients of their condition, prognosis, and the most appropriate therapy. The Pathological Anatomy Department plays a key role in personalised medicine.

Patients do not usually have direct contact with the PA Service, which occupies floors 8 and 9 in the main FJD building, employing 24 pathologists, 8 residents, n senior technicians and m technicians, supported by 2 administrative staff. Pathologists follow standardised procedures in accordance with the standards of Spanish and European scientific societies, and their work is supervised by multiple quality controls and has rigorous accreditation (ISO15189) by the National Accreditation Entity (ENAC).

Patient samples are available at the PA Department, safeguarded via the Tumour Bank under the supervision of the Clinical Research Ethics Committee.

The FJD's PA Service is the hospital service with the highest workload in Spain, has recognised specialists in all areas of human pathology, and is committed to training for students, resident physicians and clinical research.