IPMs present as painless lymphadenopathy. They usually are found in the inguinal region and grow slowly. The signs and symptoms are non-specific, i.e. it is not possible to diagnose an IPM from the symptoms and manner in which they present.The main (clinical) differential diagnosis of IPM is metastatic cancer, e.g. squamous cell carcinoma, malignant melanoma, adenocarcinoma.
Intranodal palisaded myofibroblastoma
Mammary-type myofibroblastoma
Folliculosebaceous cystic hamartoma
Basaloid follicular hamartoma
Germ cell neoplasia in situ
Lipofibromatosis-like neural tumor
Solitary cutaneous leiomyoma
In situ lymphoid neoplasia