References
External links

Euromac, an EU-funded consortium of medical and research institutes across Europe which is building a patient registry and raising standards of care for people with McArdle Disease. International Association for Muscle Glycogen Storage Disease (IamGSD). Walking With McArdles - IAMGSD videos
EUROMAC Introduction - Video about McArdle Disease and the EUROMAC Registry of McArdle Disease and other rare glycogenoses patients
Malignant lesions are aggressive and difficult to eradicate with surgery and have a recurrence rate of 32%. Epidemiology
Granular cell tumors can affect all parts of the body; however, the head and neck areas are affected 45% to 65% of the time. Of the head and neck cases 70% of lesions are located intraorally (tongue, oral mucosa, hard palate). The next most common location that lesions are found in the head and neck area is the larynx (10%). Granular cell tumors are also found in the internal organs, particularly in the upper aerodigestive tract. Vaginal granular cell tumors are generally rare.Breast granular cell tumors arise from intralobular breast stroma and occurs within the distribution of the cutaneous branches of the supraclavicular nerve. As they do follow the innervation of the skin, they may demonstrate skin changes like contraction or shrinkage. Unlike traditional breast cancers, glandular cell tumors are mostly found in the upper inner quadrant of the breast. They can erroneously diagnosed as an invasive ductal carcinoma via ultrasound and mammography, therefore, it is necessary to consider a diagnosis of invasive ductal carcinoma. The usual presentation is of a slow growing behavior, forming a polygonal accumulation of secondary lysosomes in the cytoplasm. Granular cell tumors are typically solitary and rarely larger than three centimeters. However, proliferative growth and development of an ulcer indicates likely malignancy as this type of tumor can be either benign or malignant. Malignancy is rare and constitutes only 2% of all granular cell tumors.