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Open access

Haruhiko Yamazaki, Hiroyuki Iwasaki, Yoichiro Okubo, Nobuyasu Suganuma, Katsuhiko Masudo, Hirotaka Nakayama, Yasushi Rino and Munetaka Masuda

Summary

The objective this study is to report two cases of thyroid gland invasion by upper mediastinal carcinoma. Mediastinal tumors are uncommon and represent 3% of the tumors seen within the chest. In reports on mediastinal masses, the incidence of malignant lesions ranged from 25 to 49%. The thyroid gland can be directly invaded by surrounding organ cancers. We report these cases contrasting them to the case of a thyroid cancer with mediastinal lesions. Case 1 was a 73-year-old woman who was diagnosed with papillary thyroid carcinoma, and she underwent surgery and postoperative radioactive iodine. Case 2 was a 74-year-old man who was diagnosed with non-small-cell lung carcinoma, favor squamous cell carcinoma, and he underwent chemoradiotherapy. Case 3 was a 77-year-old man who was diagnosed a thymic carcinoma based on pathological findings and referred the patient to thoracic surgeons for surgical management. The images of the three cases were similar, and the differential diagnoses were difficult and required pathological examination. Primary thyroid carcinoma and invading carcinoma originating from the adjacent organs need to be distinguished because their prognoses and treatment strategies are different. It is important to properly diagnose them by images and pathological findings.

Learning points:

  • The thyroid gland in the anterior neck can be directly invaded by surrounding organ cancers.
  • Primary thyroid carcinoma and invading carcinoma originating from the adjacent organs need to be distinguished because their prognoses and treatment strategies are different.
  • It is important to properly diagnose by images and pathological findings.
Open access

Lara Ulrich, Graham Knee and Colin Todd

Summary

Haemorrhage of a parathyroid adenoma is a rare clinical presentation. This report describes a previously fit and well 54-year-old woman who presented with acute neck swelling and pain with an overlying ecchymosis. Admission laboratory tests revealed a raised parathyroid hormone and hypercalcaemia. A computed tomography (CT) scan showed widespread anterior cervical haemorrhage and a lesion at the inferior pole of the left thyroid gland. A working diagnosis of spontaneous haemorrhage from a parathyroid adenoma was made. As she was haemodynamically stable, she was treated conservatively with a period of observation in hospital to monitor for signs of neck organ compression. Follow-up imaging with CT, ultrasound and sestamibi confirmed the likely source of haemorrhage as a parathyroid nodule with significant vascularity. The diagnosis was confirmed on histopathological analysis after elective surgical exploration of the neck 6 months after her presentation. This revealed a benign parathyroid adenoma with evidence of acute and chronic bleeding. The patient made a full recovery with immediate normalisation of her biochemistry post-operatively. Despite developing a hoarse voice in the immediate post-operative period, this resolved completely within 1 month. This case report provides further evidence to support a minimal delay for elective surgery after conservative management to reduce the risks associated with recurrent bleeding.

Learning points

  • Haemorrhage of a parathyroid adenoma should be a differential for all cases of acute cervical swelling or ecchymosis with no precipitating factor.
  • The clerking should identify any risk factors for endocrine disease.
  • Blood tests to screen for abnormal parathyroid biochemistry should be performed on admission.
  • Detailed imaging of the neck is essential to identify the source of haemorrhage and risk of compression to vital neck organs.
  • Conservative management is a suitable option for patients who remain haemodynamically stable but all should undergo a period of observation in hospital.
  • Conservatively managed patients should be considered for definitive surgical exploration within a month of presentation to avoid the risks of recurrent bleeding.