In- transit metastasis: Case report of a rare phenomenon in primary cutaneous squamous cell carcinoma

Metastatic foci situated in dermal or subcutaneous tissue without the involvement of overlying skin, between the closest lymph node and primary tumor is called in transit metastasis. Although in transit metastasis has been commonly described in malignant melanoma, there are rare cases of squamous cell carcinomas, presenting with the same. It is an uncommon form of metastasis through lymphatics and is found in immunocompromised individuals. We present a case report of squamous cell carcinoma, presenting in an elderly male, as multiple nodules beneath skin. With this case, we highlight the variety of forms of spread in cutaneous squamous cell carcinoma and its prognostic importance.
 

Keywords: Squamous cell carcinoma, In transit metastasis