Anaplastic Thyroid Carcinoma: The Great Masquerader.

Area of Science:

• Endocrinology
• Oncology
• Pathology

Background:

• Anaplastic thyroid carcinoma (ATC) is a rare and aggressive thyroid malignancy, accounting for approximately 2% of all thyroid cancers.
• Thyroid abscesses are uncommon due to the thyroid gland's rich blood supply and lymphatic drainage, often indicating underlying infections.
• The typical presentation of ATC involves rapid neck swelling and obstructive symptoms.

Purpose of the Study:

• To report an unusual case of an elderly female presenting with a thyroid abscess that was ultimately diagnosed as anaplastic thyroid carcinoma.
• To emphasize the importance of considering rare presentations of thyroid malignancies, even when initial diagnostic workups are negative for cancer.
• To discuss the management of such a rare clinical scenario.

Main Methods:

• Case report of an elderly female patient.
• Clinical presentation review, including initial symptoms of neck swelling and obstructive symptoms.
• Diagnostic procedures: initial fine-needle aspiration cytology and subsequent histopathological examination of the thyroid gland.
• Review of relevant medical literature on thyroid abscess and anaplastic thyroid carcinoma.

Main Results:

• The patient initially presented with symptoms suggestive of a thyroid abscess.
• Initial cytological examination of the thyroid gland was negative for malignancy.
• Histopathological diagnosis confirmed anaplastic thyroid carcinoma (ATC).
• The case highlights a rare presentation where a thyroid abscess masked an underlying ATC.

Conclusions:

• Thyroid abscesses, though rare, can sometimes be an atypical presentation of anaplastic thyroid carcinoma.
• Histopathological examination is crucial for definitive diagnosis, especially when initial cytology is inconclusive or negative for malignancy in suspected cases.
• This case underscores the need for vigilance and comprehensive diagnostic evaluation in patients with unusual presentations of thyroid conditions.