We report a partial fetus-like structure (homunculus) in benign ovarian mature cystic teratoma removed from a 23-yr-old female. The cyst displayed various tissues derived from the three germ layers. The homunculus had a distinguished fetal cranial structure with one upper extremity. A partially developed osteocartilagenous skeleton was identified in the cranial structure of the homunculus. Intracranial structures such as cerebral cortex, retinal pigment, and leptomeninges were extruded from the partially disrupted calvarium.
Adult ; Female ; Human ; Ovarian Cysts/*pathology ; Ovarian Neoplasms/*pathology ; Pregnancy ; Teratoma/*diagnosis/*pathology

Adult ; Brenner Tumor ; diagnosis ; pathology ; Female ; Humans ; Ovarian Neoplasms ; diagnosis ; pathology ; Ovary ; pathology ; surgery

Adenocarcinoma, Mucinous ; diagnosis ; pathology ; Cystadenocarcinoma, Mucinous ; diagnosis ; pathology ; Diagnosis, Differential ; Female ; Humans ; Ovarian Neoplasms ; pathology ; Ovary ; pathology

Mature teratoma is the most common germ cell tumor of the ovary. The tumor is essentially a benign neoplasm and surgical resection of the tumor is the treatment of choice. Recurrence with colorectal involvement after surgical removal of the primary lesion is exceedingly rare and has not been reported in Korea. We present a 43-year-old patient with a rectal mass who had already undergone left oophorectomy due to mature cystic teratoma and right oophorectomy due to hemorrhagic corpus luteum. The rectal mass was composed of a mature teratoma tissue. We postulate that leakage of the tumor elements from the cyst wall led to peritoneal tumor implantation and invasion to the rectal wall.
Adult ; Female ; Humans ; Ovarian Neoplasms/*pathology ; Rectal Neoplasms/diagnosis/*secondary ; Teratoma/diagnosis/*secondary

OBJECTIVEThe clinicopathologic and immunohistochemical features of 11 pseudomyxoma peritonei (PMP) cases were studied to determine pathologic diagnosis, site of origin and prognosis.

METHODSClinical files of 11 cases of PMP were reviewed with follow up. The changes in mucinous tumors of peritoneum and primary tumors under microscope and immunostaining were reviewed.

RESULTSEleven cases (8 women, 3 men) are reported. The patients age ranged from 36 to 76 (average 56). One died 2 years after operation, and one case was lost. The remaining 8 cases were alive 1 to 60 months postoperatively. Of the 11 cases, 8 cases had appendiceal mucinous neoplasm of the 11 cases, and 5 women had synchronous ovarian mucinous tumors; colon mucinous adenocarcinoma was present in one case with synchronous ovarian mucinous tumor; simple ovarian mucinous tumors were present in two cases. Immunostainings were consistent on mucinous tumors of appendix, ovary and peritoneum in the same case.

CONCLUSIONSTo diagnose the PMP, the type of tumor should be considered whether it is benign, low malignant or malignant. The appendix neoplasm is closely related to PMP. The prognosis depends greatly on the growth speed of the mucinous neoplasm.

Adult ; Aged ; Appendiceal Neoplasms ; diagnosis ; pathology ; Diagnosis, Differential ; Female ; Humans ; Male ; Middle Aged ; Ovarian Neoplasms ; diagnosis ; pathology ; Peritoneal Neoplasms ; diagnosis ; pathology ; Prognosis ; Pseudomyxoma Peritonei ; diagnosis ; pathology

Adult ; Diagnosis, Differential ; Female ; Humans ; Ovarian Neoplasms ; pathology ; Sertoli-Leydig Cell Tumor ; pathology

Adult ; Chondroblastoma ; pathology ; Chondroma ; pathology ; surgery ; Diagnosis, Differential ; Female ; Humans ; Ovarian Neoplasms ; pathology ; surgery ; Ovary ; pathology ; Teratoma ; pathology

To investigate the immunophenotypings of malignant epithelial mesothelioma (MEM), and to seek the valuable markers in distinguishing peritoneal MEM from peritoneal metastatic ovarian adenocarcinoma (OA) and colorectal adenocarcinoma (CA), immunohistochemical SP method was used to detect expressions of HBME-1, E-cadherin, CA19-9, MOC-31 and CK7 in paraffin-embedded tissues of 18 cases of MEM, 20 OA and 20 CA. The results showed that there was a significant difference in the expressions of E-cadherin, CA19-9 and MOC-31 between MEM and OA group (P<0.05). Similarly, the difference in the expression of HBME-1, E-cadherin, CA19-9, MOC-31 and CK7 between MEM and CA groups is significant (P<0.05). These results indicate that HBME-1 could be used as a positive marker in distinguishing MEM from CA. E-cadherin, CA19-9 and MOC-31 are considered to be useful negative markers in diagnostic distinction between MEM and metastatic adenocarcinomas, including OA and CA. CK7 is the best positive marker in distinguishing MEM from CA, but this marker appears to be valueless in discriminating MEM from OA.
Adenocarcinoma ; diagnosis ; pathology ; Colorectal Neoplasms ; complications ; diagnosis ; pathology ; Cystadenocarcinoma, Mucinous ; diagnosis ; pathology ; Cystadenocarcinoma, Serous ; diagnosis ; pathology ; Diagnosis, Differential ; Female ; Humans ; Immunophenotyping ; Male ; Mesothelioma ; diagnosis ; etiology ; pathology ; Ovarian Neoplasms ; complications ; diagnosis ; pathology ; Peritoneal Neoplasms ; diagnosis ; etiology ; pathology

We present a case of a 40-yr-old woman diagnosed with a primary malignant struma ovarii. The patient was admitted with the complaint of pelvic pain and a large pelvic mass in the mid-portion of lower abdomen on gynecological examination. Pre-operative tumor markers and routine biochemistry were unremarkable. She was treated with total abdominal hysterectomy and right salpingo-oopherectomy. Post-operatively, she was diagnosed with a malignant struma ovarii through the usage of histopathological criteria similar to the guidelines for primary thyroid gland disease. The patient was subsequently performed left salpingo-oopherectomy and retroperitoneal pelvic lympadenectomy for re-staging. Although, left ovary and lymph nodes were histopathologically normal, she was offered thyroidectomy but she refused to accept the offer. Thyroglobulin level was monitored in the post-operative period. She is free of the disease for 18 months.
Adult ; Female ; Humans ; Hysterectomy ; Ovarian Neoplasms/*diagnosis/pathology/ultrasonography ; Ovariectomy ; Struma Ovarii/*diagnosis/pathology/secondary ; Thyroglobulin/metabolism

OBJECTIVETo investigate magnetic resonance imaging (MRI) characteristics of ovarian carcinosarcoma and the diagnostic value of MRI.

METHODSThe MRI features of ovarian carcinosarcoma and clinical data of 5 patients with ovarian carcinosarcoma were reviewed. All the lesions were confirmed by surgery and pathological examination.

RESULTSMRI of ovarian carcinosarcoma in the 5 cases all showed large tumor mass and heterogeneous high-intensity on T2-weighted images and low-intensity on T1-weighted images, with laminar or stripe-like enhancement. Hemorrhage and necrosis were also displayed in some lesions. In two cases, the tumors invaded the greater omentum, sigmoid colon and the body of the uterus, with regional lymph node involvement. Pelvic effusion was observed in all the cases with pelvic hematocele in 1 case.

CONCLUSIONMRI is useful in the detection and staging of ovarian carcinosarcoma.

Aged ; Carcinosarcoma ; diagnosis ; pathology ; Female ; Humans ; Magnetic Resonance Imaging ; Middle Aged ; Ovarian Neoplasms ; diagnosis ; pathology ; Retrospective Studies