Case 306: Ectopic Thyroid Goiter in the Porta Hepatis.

Area of Science:

• Hepatobiliary Imaging
• Gastrointestinal Endoscopy
• Nuclear Medicine

Background:

• A 61-year-old woman presented with an incidentally discovered porta hepatis mass.
• Past medical history includes pulmonary embolism, pulmonary abscess, and hypothyroidism treated with levothyroxine.
• No history of liver disease, cancer, or trauma was reported.

Observation:

• Physical examination and laboratory data, including tumor markers (CEA, CA 19-9), were unremarkable.
• CT imaging revealed a mass in the porta hepatis.
• Endoscopic ultrasound-guided fine-needle biopsy was performed due to concerns for malignancy.

Findings:

• The porta hepatis mass was characterized using multiphasic contrast-enhanced CT.
• Whole-body iodine 131 (131I) scintigraphy was also performed.
• Endoscopic ultrasound-guided fine-needle biopsy provided tissue for histopathological analysis.

Implications:

• This case highlights the importance of comprehensive imaging and biopsy for characterizing incidental liver region masses.
• Diagnostic workup for porta hepatis masses requires a multidisciplinary approach.
• Accurate characterization is crucial for appropriate patient management and treatment planning.