Differential Diagnosis for Pelvic Pain and Adnexal Mass
- Single Most Likely Diagnosis
- Ovarian cyst: The presence of a 2.5 x 2 cm cyst-like low-density solid lesion in the left adnexa is highly suggestive of an ovarian cyst, which is a common cause of pelvic pain and can be benign or malignant.
- Other Likely Diagnoses
- Endometriosis: Given the patient's symptoms of cramping and pelvic pain, endometriosis is a possible diagnosis, although the CT scan did not show any definitive evidence of endometriosis.
- Adnexal torsion: Although the CT scan did not show any evidence of adnexal torsion, it is still a possible diagnosis, especially if the patient's symptoms worsen or change.
- Pelvic inflammatory disease (PID): PID is a possible diagnosis, although the CT scan did not show any evidence of inflammation in the floor of the pelvis or the adnexa.
- Do Not Miss Diagnoses
- Ovarian torsion: Ovarian torsion is a medical emergency that requires prompt attention. Although the CT scan did not show any evidence of torsion, it is still a possible diagnosis, especially if the patient's symptoms worsen or change.
- Ectopic pregnancy: Although the patient's history does not suggest pregnancy, ectopic pregnancy is a possible diagnosis that should not be missed, as it can be life-threatening.
- Appendicitis: Although the CT scan did not show any evidence of appendicitis, it is still a possible diagnosis, especially if the patient's symptoms worsen or change.
- Rare Diagnoses
- Ovarian cancer: Although the CT scan showed a cyst-like lesion in the left adnexa, ovarian cancer is a rare diagnosis that should be considered, especially if the patient's symptoms persist or worsen.
- Dermoid cyst: A dermoid cyst is a rare type of ovarian cyst that can cause pelvic pain and should be considered in the differential diagnosis.
- Adnexal malignancy: Although rare, adnexal malignancy is a possible diagnosis that should be considered, especially if the patient's symptoms persist or worsen.