Differential Diagnosis for Complex Cystic Mass 7.9cm
Single Most Likely Diagnosis
- Ovarian Cystadenoma or Cystadenocarcinoma: Given the size and complexity of the cystic mass, an ovarian cystadenoma or cystadenocarcinoma is a strong consideration, especially in female patients. These tumors can grow quite large and have both solid and cystic components.
Other Likely Diagnoses
- Dermoid Cyst (Mature Teratoma): A dermoid cyst is a type of germ cell tumor that can contain a variety of tissues, including hair, teeth, and bone, and can appear as a complex cystic mass on imaging.
- Endometrioma: A large endometrioma, especially if it has undergone hemorrhage or degeneration, can appear as a complex cystic mass.
- Hemorrhagic Cyst: A hemorrhagic cyst, particularly if it is large and has a complex appearance due to clot and fibrin deposition, could be considered.
Do Not Miss Diagnoses
- Ovarian Torsion: Although less likely given the description of a "mass," ovarian torsion can present with a complex appearance on imaging due to edema and hemorrhage. It is a surgical emergency.
- Ectopic Pregnancy: In a female patient of childbearing age, an ectopic pregnancy can present as a complex adnexal mass and is a life-threatening condition if not promptly diagnosed and treated.
- Tubovarian Abscess: A large tubovarian abscess can appear as a complex cystic mass and is a serious condition that requires prompt antibiotic treatment and possible drainage.
Rare Diagnoses
- Gastrointestinal Stromal Tumor (GIST) with Cystic Degeneration: Although rare, a GIST with cystic degeneration could potentially present as a complex cystic mass, particularly if it involves the stomach or small intestine.
- Cystic Mesothelioma: A rare tumor of the peritoneal lining, cystic mesothelioma can present as multiple cystic masses, but a single large complex cystic mass is less common.
- Mullerian Duct Cyst: A rare congenital anomaly that can present as a large cystic mass in the pelvis, often discovered incidentally.