A case of secondary syphilis involving tonsil, pulmonary, and multiple lymph nodes: 18F-FDG PET/CT findings
Related Experiment Video
Updated: Apr 19, 2026

Analysis of 18FDG PET/CT Imaging as a Tool for Studying Mycobacterium tuberculosis Infection and Treatment in Non-human Primates
Published on: September 5, 2017
Zhanli Fu1, Jin Zhang, Qian Li
1From the *Department of Nuclear Medicine, Peking University First Hospital; †Department of Nuclear Medicine, Dongzhimen Hospital, Beijing University of Chinese Medicine; and ‡Department of Ultrasound, Peking University First Hospital, Beijing, China.
Abstract:
A 50-year-old man with general fatigue and weight loss underwent FDG PET/CT scan to detect possible occult malignancy. The images revealed abnormal FDG activity in the tonsils, right lung, and in the cervical, axillary, and inguinal lymph nodes. Lymphoma was initially suspected. However, pathologic examination after cervical lymph node biopsy revealed only reactive hyperplasia. Further examinations including serologic tests led to a diagnosis of secondary syphilis. A follow-up PET/CT scan after a 6-month benzylpenicillin therapy showed significant interval improvement.
More Related Videos
10:28Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT
Published on: January 22, 2018
06:03Use of Electromagnetic Navigational Transthoracic Needle Aspiration E-TTNA for Sampling of Lung Nodules
Published on: May 23, 2015
Related Concept Videos
Radiological Investigation III: Pulmonary Angiogram and PET Scan
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
Pulmonary Tuberculosis III
The first classification is based on the development of the disease, and it includes the following categories:
Pulmonary Tuberculosis IV
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
Endocarditis II: Clinical Features of Infective Endocarditis
Tonsillitis I: Introduction
Etiology
Three primary contributing factors have been identified.