26266396 Visualization

A 55 Age - year Age - old Age woman Sex was referred Clinical_event to our hospital Nonbiological_location because of a suspicion of mediastinal Biological_structure tumor Sign_symptom incidentally found through a medical Clinical_event - checkup Clinical_event plain X Diagnostic_procedure - ray Diagnostic_procedure photography Diagnostic_procedure ( X Diagnostic_procedure - P Diagnostic_procedure ) (Figure ​(Figure1A).1A).
Chest Biological_structure MRI Diagnostic_procedure revealed a 3 Distance   cm Distance diameter tumor Sign_symptom which seemed to connect to the right Biological_structure lobe Biological_structure of Biological_structure thyroid Biological_structure and projected into the mediastinum Biological_structure (Figure ​1B).
By 123I Diagnostic_procedure - RI Diagnostic_procedure , no Lab_value unusual Lab_value accumulation Lab_value was detected (Figure ​1C).
A fine Detailed_description needle Detailed_description aspiration Detailed_description biopsy Diagnostic_procedure , which is viewed as the “gold standard” for diagnosis in most cases, was tried but could Lab_value not Lab_value reach Lab_value a Lab_value conclusive Lab_value diagnosis Lab_value .
Thereby, 18F Diagnostic_procedure - FDG Diagnostic_procedure - PET Diagnostic_procedure was performed and a high Lab_value accumulation Lab_value was revealed with standardized Diagnostic_procedure uptake Diagnostic_procedure value Diagnostic_procedure ( SUV Diagnostic_procedure ) of 3.8 Lab_value (Figure ​1D).
Thus, as a possibility of malignancy Disease_disorder could not be excluded, the right Biological_structure lobe Biological_structure excision Therapeutic_procedure procedure for thyroid Biological_structure gland Biological_structure was enforced.
The obtained tumor Sign_symptom was continuous to the right Biological_structure lobe Biological_structure as expected.
The surface was flat Texture and smooth Texture and the exfoliation from the circumference organization was easy (Figure ​2A).
Microscopically Diagnostic_procedure , the encapsulated tumor Coreference consisted of atypical Sign_symptom large Detailed_description - sized Detailed_description follicles Biological_structure without malignant Sign_symptom characteristics Sign_symptom , the background thyroid Biological_structure tissue Biological_structure showing no remarkable change Sign_symptom (Figure 2B).
Thus, histological Diagnostic_procedure diagnosis Diagnostic_procedure was follicular Disease_disorder thyroid Disease_disorder adenoma Disease_disorder .
Ethical approval was not thought to be necessary because all the clinical course of the case was completely within usual medical cares.
Informed consent was given from the case on each occasion of diagnostic examinations and therapeutic procedures.