Medicine · 2017
Primary thyroid-like low-grade nasopharyngeal papillary adenocarcinoma: A case report and literature review.
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Zhang Wan-Lin, Ma Shuang, Havrilla Lauren, Cai Lin, Yu Cheng-Qian, Shen Shuai, Xu Hong-Tao, Wang Liang, Yu Juan-Han, Lin Xu-Yong, Wang Endi, Yang Lian-He
Аннотация
RATIONALE: Primary thyroid-like low-grade nasopharyngeal papillary adenocarcinoma (TL-LGNPPA) is an extremely rare malignant nasopharyngeal tumor with features resembling papillary thyroid carcinoma including nuclear positive expression of thyroid transcription factor-1 (TTF-1).
PATIENT CONCERNS: A 64-year-old male presented with nasal bleeding and a foreign body sensation of the nasopharynx. Laryngoscopy revealed a 2.0-cm broad-based mass with a smooth surface on the posterior wall of the nasopharynx. A biopsy was obtained.
DIAGNOSES: Histopathologic examination demonstrated tumor cells arranged in both papillary and glandular architecture. The tumor cells express nuclear immunoreactivity for TTF-1. The diagnosis of TL-LGNPPA was made.
INTERVENTIONS: After the patient was diagnosed with TL-LGNPPA, he underwent complete surgical resection.
OUTCOMES: There was no recurrence or evidence of metastatic disease at the 12-month follow-up.
LESSONS: TL-LGNPPA is easy to misdiagnose as metastatic papillary thyroid carcinoma or other relative primary adenocarcinomas. It is important to have a broad differential diagnosis and know the key features of each entity because the prognosis and clinical treatment of each may differ.
PATIENT CONCERNS: A 64-year-old male presented with nasal bleeding and a foreign body sensation of the nasopharynx. Laryngoscopy revealed a 2.0-cm broad-based mass with a smooth surface on the posterior wall of the nasopharynx. A biopsy was obtained.
DIAGNOSES: Histopathologic examination demonstrated tumor cells arranged in both papillary and glandular architecture. The tumor cells express nuclear immunoreactivity for TTF-1. The diagnosis of TL-LGNPPA was made.
INTERVENTIONS: After the patient was diagnosed with TL-LGNPPA, he underwent complete surgical resection.
OUTCOMES: There was no recurrence or evidence of metastatic disease at the 12-month follow-up.
LESSONS: TL-LGNPPA is easy to misdiagnose as metastatic papillary thyroid carcinoma or other relative primary adenocarcinomas. It is important to have a broad differential diagnosis and know the key features of each entity because the prognosis and clinical treatment of each may differ.