Journal of Infectious Diseases & Travel Medicine (JIDTM)

ISSN: 2640-2653

Case Report

Primary Hydatid Cyst of the Thyroid Gland Revealed by Primary Hypothyroidism

Authors: Salem Bouomrani*

DOI: 10.23880/jidtm-16000121

Abstract

Introduction: The thyroid localization of the hydatid cyst (HC) remains exceptional and unusual even in countries where this Parasitosis is still endemic: its frequency varies from 0.1 to 0.6 ‰ depending on the series. It is most often asymptomatic or resulting in anterior cervical swelling or more rarely a hoarseness of the voice. We report an original observation of thyroid HC revealed by primary hypothyroidism. Observation: An eight-year-old patient with no notable pathological history was explored for normochromic normocytic anemia at 8 g/dl. The clinical examination found neither jaundice nor splenomegaly. There was anterior cervical swelling that was painless and lateralized to the right. No lymphadenopathy or other palpable mass was noted. Biology revealed peripheral hypothyroidism with TSH at 7.83 μIU/ml. The balance of hereditary hemolytic anemias was negative. Cervical ultrasonography and CT showed an anechoic anterior cervical mass 2.51 cm in diameter, occupying the right thyroid lobe, without micro calcifications, intracystic vegetation, or adenopathies. Hydatid serodiagnostic was positive. The diagnosis of thyroid HC was confirmed by histological examination post loboishmectomy. The total blood count and TSH were spontaneously corrected after one month of the surgery. Conclusion: The diagnosis of HC is worthy of mention in the presence of peripheral hypothyroidism with increased thyroid gland volume, especially in endemic areas. This location can sometimes hide associated thyroid neoplasia.

Keywords: Hydatid Cyst; Primary Hypothyroidism; Thyroid Gland; Echinococcosis; Parasitosis

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