While there is some variability in histopathologic description of MRV schwannoma, common features include microcystic/reticular spaces and
myxoid material.
Fine needle aspiration cytology of the mass reveals
myxoid liposarcoma over
myxoid chondrosarcoma and atypical lipomatous tumour.
Pacinian neurofibroma (PN) is a very rare benign dermal tumor that is characterized by the presence of Pacinian corpuscles-like structures in the dermal
myxoid stroma.1 The term pacinian neurofibroma was initially proposed by Thoma in 1894, then by Prichard and Custer in 1952, also by Prose et al.
The fetal type, which was first described by Dehner in 1972, (2) includes two subtypes: the
myxoid, or classic, type, characterized by an abundance of
myxoid matrix, and the cellular, or intermediate, type, characterized by a proliferation of elongated spindle cells.
The cancer Kate was originally diagnosed with, called
Myxoid Liposarcoma, is extremely rare, forming less than 1% of all cancers diagnosed annually.
Histologically, they can be classified as simple lipoma, fibrolipoma, spindle cell lipoma, intramuscular or infiltrating lipoma, angiolipoma, pleomorphic lipoma,
myxoid lipoma, and atypical lipoma.
MLS/RCLS tissue is composed of round to oval shaped mesenchymal cells and a variable number of lipoblasts, set in a
myxoid matrix with a fine piped capillary network.
Extraskeletal
myxoid chondrosarcoma (EMC) is an uncommon low-grade sarcoma of the soft tissue, usually presenting as a slow-growing mass in men in their fifth to sixth decades.[sup.1] It is characterized by a multinodular growth of primitive chondroblast-like cells in an abundant
myxoid matrix.
Histopathological examination revealed an intrabdominal fibromatosis with densely collagenised stroma and dilated vessels with
myxoid change [Figure 4].
Some cases may have MIFS-like features, such as
myxoid stroma or ganglion-like cells with prominent nucleoli similar to Reed-Sternberg-like cells.
As described above, liposarcomas are classified into intermediate graded tumors (well-differentiated) and malignant graded tumors (dedifferentiated,
myxoid, pleomorphic, and not otherwise specified).
Extraskeletal
myxoid chondrosarcoma (EMC) is a rare type of sarcoma of the soft tissues that usually presents as a slow-growing mass in men in their 50-60s (1,2).