Plasmocitoma da glândula tireoide: relato de caso de uma rara neoplasia / Primary plasmacytoma of the thyroid gland: a case report of a rare neoplasia
J. bras. patol. med. lab
;
48(4): 281-285, ago. 2012. ilus, tab
Article
in English
| LILACS
| ID: lil-650600
ABSTRACT
Extramedullary plasmacytoma comprises 3%-5% of all plasma cell neoplasms, and approximately 80% of the cases occur in the upper respiratory tract. Primary thyroid plasmacytomas (PTP) are rare tumors. The authors report a case of PTP in a male patient with dyspnea and dysphagia. Physical examination and computerized tomography (CT) scan revealed a solid tumor affecting the thyroid gland, measuring 12 cm in its greatest dimension. Surgical biopsy was performed. Microscopy revealed a hypercellular malignant neoplasm composed of round plasmacytoid cells arranged in solid nests, which showed a positive immunoexpression for CD138, epithelial membrane antigen (AME), kappa light chains and multiple myeloma oncogene 1 (MUM1). The diagnosis of PTP was accordingly established.
RESUMO
O plasmocitoma extramedular constitui 3%-5% de todas as neoplasias de plasmócitos e aproximadamente 80% dos casos ocorrem no trato respiratório superior. Plasmocitomas primários da tireoide (TPP) são tumores raros. Os autores relatam um caso de TPP em um paciente masculino referindo dispneia e disfagia. O exame físico e a tomografia computadorizada revelaram tumor sólido comprometendo a glândula tireoide, medindo 12 cm na maior dimensão, o qual foi submetido à biópsia cirúrgica. À microscopia, foi identificada neoplasia maligna hipercelular constituída por células redondas/plasmocitoides dispostas em ninhos sólidos, as quais exibiam imunoexpressão positiva para CD138, antígeno da membrana epitelial (AME), cadeias leves kappa e oncogene mieloma múltiplo 1 (MUM1). O diagnóstico de TPP foi, então, estabelecido.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Plasmacytoma
/
Thyroid Gland
/
Immunohistochemistry
/
Multiple Myeloma
Type of study:
Prognostic study
Limits:
Humans
/
Male
Language:
English
Journal:
J. bras. patol. med. lab
Journal subject:
Pathology
Year:
2012
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Hospital Nossa Senhora da Conceição/BR
/
Universidade Federal do Rio Grande do Sul/BR
/
Universidade Luterana do Brasil/BR
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