Follicular Cell-Derived Lesions in Ectopic Locations (Struma Ovarii) Bruce M. Wenig, MD Key Facts Terminology Struma ovarii Ovarian teratomas in which thyroid tissue is predominant (at least 50%) or sole…
Riedel Thyroiditis Bruce M. Wenig, MD Key Facts Terminology Idiopathic fibrosing process and not per se an inflammatory (thyroiditis) thyroid disease Etiology/Pathogenesis Association between RT and Hashimoto thyroiditis supports autoimmune…
Subacute Granulomatous Thyroiditis (de Quervain) Lester D. R. Thompson, MD Key Facts Terminology Self-limited inflammatory condition characterized by epithelioid histiocytes, multinucleated giant cells, and acute inflammatory cells Clinical Issues Female…
Dyshormonogenetic Goiter Lester D. R. Thompson, MD Key Facts Terminology Thyroid enlargement due to hereditary defect in thyroid hormone synthesis Clinical Issues Usually autosomal recessive, enzyme defect in one of…
Solid Cell Nest Lester D. R. Thompson, MD Key Facts Terminology Small remnant of ultimobranchial apparatus, associated with development of thyroid C-cells Clinical Issues Posteromedial and lateral area of bilateral…
Lymphangioma Brenda L. Nelson, DDS, MS Lester D. R. Thompson, MD Key Facts Terminology Cystic hygroma Malformation of lymphatic system, generally considered congenital Etiology/Pathogenesis Associated with chromosomal abnormalities Clinical Issues…
Nuchal-type Fibroma Brenda L. Nelson, DDS, MS Lester D. R. Thompson, MD Key Facts Terminology Benign, hyalinized, fibroblastic proliferation involving dermis and subcutis Clinical Issues Most common in posterior neck…
Paraganglioma (Glomus Jugulare/Tympanicum) Lester D. R. Thompson, MD Key Facts Terminology Synonyms: Glomus jugulare, glomus tympanicum Neoplasm arising from paraganglia in vicinity of jugular bulb or medial cochlea promontory Clinical…
Necrotizing Otitis Externa Bruce M. Wenig, MD Key Facts Etiology/Pathogenesis External otitis related to Pseudomonas aeruginosa infection Clinical Issues Diabetic, chronically debilitated, or immunologically deficient patients Primarily affects older patients…
Central Odontogenic Fibroma Brenda L. Nelson, DDS, MS Key Facts Terminology Rare, benign, odontogenic neoplasm of inactive-appearing odontogenic epithelium embedded in mature fibrous stroma Etiology/Pathogenesis Considered to be of periodontal…
