<s>[INST] In the last three years I have had my gallbladder removed, a hysterectomy, a parotid tumor removed in January, my thyroid problems started in May, now I have a lump on my collarbone and knots on my shoulder? Could they all be related and what could be causeing all of this? [/INST] Hi thanks for contacting HCM...Noted you have many surgery done ..You have not mentioned cause for removal hysterectomy and parotid...It might be malignancy...For parotid it might be malignant tumour..So it need to be known.Here from lump FNAC is to be done...If it is suspicious biopsy done to look for malignancy..You have surgery you mentioned for malignancy then it might be metastasis means spread for residual cancer cell.so you should consult surgeon...Take care. </s>