ribs tender to touch; pain constant and wakes her up at night; ultrasound showed left axilla lymph node doubled in size; 2 additional lymph nodes found; pain worsen in March/pain constant and wakes her up at night; lump/swelling in back and under breast; sore left arm; sick in bed for 3 days after dose 2; sweats, drenched clothes; complete body aches and pain; nausea; chills; fever of 102.9F; Benign lymph node found in left/right axillary region; Left underarm felt achy; left sore arm; Diagnosed with uterine cancer; This spontaneous case was reported by an other health care professional and describes the occurrence of UTERINE CANCER (Diagnosed with uterine cancer) in a 62-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 026L20A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     The patient's past medical history included Total hysterectomy (For treatment of cancer) on 29-Jan-2021. Concomitant products included DENOSUMAB (PROLIA) for an unknown indication.    On 06-Jan-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 06-Jan-2021, the patient experienced PAIN IN EXTREMITY (left sore arm). On 08-Jan-2021, the patient experienced AXILLARY PAIN (Left underarm felt achy). On 13-Jan-2021, the patient experienced BENIGN LYMPH NODE NEOPLASM (Benign lymph node found in left/right axillary region). In January 2021, the patient experienced UTERINE CANCER (Diagnosed with uterine cancer) (seriousness criterion medically significant). On 03-Feb-2021, the patient experienced ILLNESS (sick in bed for 3 days after dose 2), HYPERHIDROSIS (sweats, drenched clothes), PAIN (complete body aches and pain), PAIN IN EXTREMITY (sore left arm), NAUSEA (nausea), CHILLS (chills) and PYREXIA (fever of 102.9F). On 01-Mar-2021, the patient experienced PAIN (pain worsen in March/pain constant and wakes her up at night) and SWELLING (lump/swelling in back and under breast). On 14-Jun-2021, the patient experienced LYMPHADENOPATHY (ultrasound showed left axilla lymph node doubled in size; 2 additional lymph nodes found). On an unknown date, the patient experienced TENDERNESS (ribs tender to touch) and INSOMNIA (pain constant and wakes her up at night). The patient was treated with Surgery (total abdominal hysterectomy) for Uterine cancer. On 09-Jan-2021, PAIN IN EXTREMITY (left sore arm) had resolved. On 06-Feb-2021, ILLNESS (sick in bed for 3 days after dose 2), HYPERHIDROSIS (sweats, drenched clothes), PAIN (complete body aches and pain), PAIN IN EXTREMITY (sore left arm), NAUSEA (nausea), CHILLS (chills) and PYREXIA (fever of 102.9F) had resolved. At the time of the report, UTERINE CANCER (Diagnosed with uterine cancer), BENIGN LYMPH NODE NEOPLASM (Benign lymph node found in left/right axillary region), PAIN (pain worsen in March/pain constant and wakes her up at night), SWELLING (lump/swelling in back and under breast), TENDERNESS (ribs tender to touch), INSOMNIA (pain constant and wakes her up at night), AXILLARY PAIN (Left underarm felt achy) and LYMPHADENOPATHY (ultrasound showed left axilla lymph node doubled in size; 2 additional lymph nodes found) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 13-Jan-2021, Mammogram: benign lymph node (Inconclusive) Benign lymph node was found in left and right axillae. This was a new finding..     The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) was unknown.   For mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular), the reporter did not provide any causality assessments.   Treatment information was included hysterectomy for cancer.  This case concerns a 62-year-old female with a serious unexpected event of uterine cancer, and nonserious benign lymph node neoplasm, pain in extremity, axillary pain and other nonserious events. Event latency within 24 hours after first dose mRNA-1273. Based on current available information and temporal association between the use of the product and the start date of the event, a causal relationship cannot be excluded.; Sender's Comments: This case concerns a 62-year-old female with a serious unexpected event of uterine cancer, and nonserious benign lymph node neoplasm, pain in extremity, axillary pain and other nonserious events. Event latency within 24 hours after first dose mRNA-1273. Based on current available information and temporal association between the use of the product and the start date of the event, a causal relationship cannot be excluded.