Collagenous fibroma (desmoplastic fibroblastoma): a unique presentation as a goiter in an 88-year-old man.
Collagenous fibroma (desmoplastic fibroblastoma) is a recently described entity in the medical literature. This entity has been reported in various locations, including the upper extremities, posterior neck, upper back, lower extremities, abdominal wall, and hip. We report an interesting case of an 88-year-old man who presented with an apparent goiter involving the right anterolateral neck. Histologic studies revealed a well-circumscribed, paucicellular lesion composed of stellate and spindle-shaped fibroblasts separated by bundles of collagen. No mitotic figures, necrosis, or calcification was observed. The stellate and spindle-shaped cells were positive for vimentin and focally positive for desmin, indicating myofibroblastic differentiation. Our case exemplifies the diagnostic difficulties that these tumors may pose from the clinical and radiologic standpoint when they clinically present as a goiter.
Department of Pathology and Laboratory Medicine, Mount Sinai Medical Center of Greater Miami, Miami Beach, FL 33140, USA.
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C
Wilson
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Summerall
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J
Lubin
T W
TW
Mesko
D000368:Aged; D000369:Aged, 80 and over; D003893:Desmin / Q000032:analysis; D003937:Diagnosis, Differential; D018220:Fibroma, Desmoplastic / Q000000981:diagnostic imaging / Q000473:pathology*; D006042:Goiter / Q000473:pathology*; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008479:Mediastinal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D013961:Thyroid Gland / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed; D014746:Vimentin / Q000032:analysis
D003893:Desmin; D014746:Vimentin