Benign Thyroid Nodule: This is the most common cause of neck nodules, and the majority are benign. The size of 2 x 7mm is consistent with a small thyroid nodule, which can be atypical in appearance but still benign.

Reactive Lymph Node: Lymph nodes in the neck can become reactive and enlarged due to various causes such as infection or inflammation. The size and atypical appearance could suggest a reactive lymph node.
Branchial Cleft Cyst: These congenital anomalies can present as atypical neck nodules, especially if they become infected or inflamed.
Lipoma or Other Soft Tissue Tumors: Benign soft tissue tumors like lipomas can occur in the neck and present as atypical nodules.

Papillary Thyroid Carcinoma: Although less likely, it's crucial not to miss thyroid cancer, as it can present with atypical nodules. The size of 2 x 7mm is within the range for papillary thyroid carcinoma.
Metastatic Lymph Node: A metastatic lymph node from a primary cancer elsewhere in the body (e.g., head and neck, lung, or breast) could present as an atypical neck nodule.
Lymphoma: Both Hodgkin and non-Hodgkin lymphoma can present with lymphadenopathy in the neck, which might appear as an atypical nodule.

Paraganglioma: These are rare neuroendocrine tumors that can occur in the neck, presenting as atypical nodules.
Carotid Body Tumor: A rare tumor of the carotid body, which can present as a neck mass.
Castleman Disease: A rare lymphoproliferative disorder that can cause lymphadenopathy, presenting as an atypical neck nodule.