Metastatic hypernephroma to the head and neck.

Area of Science:

• Oncology
• Radiology
• Head and Neck Surgery

Background:

• Hypernephroma, a type of kidney cancer, is a significant infraclavicular tumor with a propensity for head and neck metastasis.
• Approximately 15% of hypernephroma patients develop metastases, with nearly 8% presenting with head and neck disease.
• These metastases are often vascular and can manifest before primary tumor diagnosis or years after treatment.

Purpose of the Study:

• To present eight cases of metastatic hypernephroma to the head and neck documented by CT.
• To review the unusual clinical behaviors and imaging characteristics of these metastases.
• To document the first reported case of cervical lymph node metastasis with hemorrhage in hypernephroma, identified by CT.

Main Methods:

• Retrospective review of eight cases with metastatic hypernephroma to the head and neck.
• Detailed analysis of CT imaging findings for each case.
• Clinical correlation of metastasis presentation relative to primary tumor diagnosis and treatment.

Main Results:

• Hypernephroma is the third most common infraclavicular tumor to metastasize to the head and neck.
• Metastases are typically vascular and can precede or follow primary tumor diagnosis.
• A novel CT-documented case of cervical lymph node metastasis with hemorrhage was identified.

Conclusions:

• Metastatic hypernephroma to the head and neck is an important consideration in oncology and radiology.
• CT imaging plays a crucial role in diagnosing and characterizing these metastases.
• The identification of CT-documented cervical lymph node metastasis with hemorrhage expands the differential diagnosis for cystic neck masses.