Acrometastases: The nasty alter ego of fingertip infections

Area of Science:

• Oncology
• Dermatology
• Pathology

Background:

• Fingertip infections are frequent primary care diagnoses.
• Acrometastases, metastases distal to the elbow or knee, are rare but serious.
• These conditions can be clinically indistinguishable in early presentations.

Observation:

• A patient presented with a lesion on the distal phalanx of the left middle finger.
• The lesion was initially diagnosed as a fingertip infection on two separate occasions.
• Subsequent evaluation revealed acrometastases from a malignant phyllodes tumor.

Findings:

• Malignant phyllodes tumors can metastasize distally to the digits.
• Acrometastases may mimic common infections, leading to diagnostic delays.
• Accurate diagnosis requires high clinical suspicion and appropriate investigations.

Implications:

• Increased awareness of acrometastases is crucial for primary care physicians and dermatologists.
• Prompt recognition and diagnosis of acrometastases can improve patient outcomes.
• This case underscores the importance of considering rare diagnoses in persistent or atypical presentations.