A case report of syndromic multinodular goitre in adolescence: Exploring the phenotype overlap between cowden and DICER1 syndromes

dc.citation.epage50en_US
dc.citation.issueNumber1en_US
dc.citation.spage44en_US
dc.citation.volumeNumber7en_US
dc.contributor.authorSoglio, D. B.en_US
dc.contributor.authorKock, L.en_US
dc.contributor.authorGauci, R.en_US
dc.contributor.authorSabbaghian, N.en_US
dc.contributor.authorThomas, E.en_US
dc.contributor.authorAtkinson, H. C.en_US
dc.contributor.authorPachter, N.en_US
dc.contributor.authorRyan, S.en_US
dc.contributor.authorWalsh, J. P.en_US
dc.contributor.authorKumarasinghe, M. P.en_US
dc.contributor.authorCarpenter, K.en_US
dc.contributor.authorAydoğan, A.en_US
dc.contributor.authorStewart, C. J. R.en_US
dc.contributor.authorFoulkes, W. D.en_US
dc.contributor.authorChoong, C. S.en_US
dc.date.accessioned2019-02-21T16:06:56Zen_US
dc.date.available2019-02-21T16:06:56Zen_US
dc.date.issued2018en_US
dc.departmentDepartment of Molecular Biology and Geneticsen_US
dc.description.abstractBackground: Hereditary tumour predisposition syndromes may increase the risk for development of thyroid nodules at a young age. We present the case of an adolescent female with Cowden syndrome who had some atypical phenotypic features which overlapped with the DICER1 syndrome. Material and Methods: A 17-year-old female presented with a 3-month history of progressive right neck swelling. Fine needle cytology of the thyroid revealed a follicular neoplasm with features suggestive of follicular variant of papillary thyroid carcinoma and she underwent a hemithyroidectomy. Enlarging nodules in the remaining thyroid led to a completion thyroidectomy at 19 years of age. The patient's past medical history included an ovarian mixed malignant germ cell tumour, pulmonary nodules and cysts, renal cysts, mucocutaneous lesions, an arachnoid cyst, and a fibrous breast lesion. Macrocephaly was noted on physical examination. Results: Based on the patient's complex phenotype and young age, a hereditary predisposition syndrome was suspected and genetic testing of PTEN and DICER1 was undertaken. A heterozygous truncating germ-line PTEN mutation was identified, which combined with clinical findings, met criteria for the diagnosis of Cowden syndrome. Additional loss of heterozygosity of the wild-Type PTEN allele was detected in the right thyroid lesion and ovarian tumour. No DICER1 mutations were identified. Conclusions: Genetic testing was crucial in elucidating this patient's predisposition to the early development of neoplastic and non-neoplastic conditions. Our report also highlights the phenotypic overlap between the Cowden and DICER1 syndromes and illustrates the importance of recognising the variable phenotypic features of hereditary syndromes in order to enable timely implementation of appropriate care.en_US
dc.description.provenanceMade available in DSpace on 2019-02-21T16:06:56Z (GMT). No. of bitstreams: 1 Bilkent-research-paper.pdf: 222869 bytes, checksum: 842af2b9bd649e7f548593affdbafbb3 (MD5) Previous issue date: 2018en_US
dc.identifier.doi10.1159/000481620en_US
dc.identifier.eissn2235-0802en_US
dc.identifier.issn2235-0640en_US
dc.identifier.urihttp://hdl.handle.net/11693/50338en_US
dc.language.isoEnglishen_US
dc.publisherS. Karger AGen_US
dc.relation.isversionofhttps://doi.org/10.1159/000481620en_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.source.titleEuropean Thyroid Journalen_US
dc.subjectCowden syndromeen_US
dc.subjectDICER1 syndromeen_US
dc.subjectHereditaryen_US
dc.subjectMutationsen_US
dc.subjectPTENen_US
dc.subjectThyroid nodulesen_US
dc.titleA case report of syndromic multinodular goitre in adolescence: Exploring the phenotype overlap between cowden and DICER1 syndromesen_US
dc.typeArticleen_US

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