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PubMed1991

[Dermoid cyst of the scalp. Apropos of a case].

A subgaleal dermoid cyst of a 32 years old white adult is reported. The lesion appeared at the age of several years and ten regularly. Clinical examination, complementary exams as well as the result of the operation are reported. Embryology, histological classification and the main clinical, laboratory and histological characteristics of such lesions are defined by the review of the literature. Subgaleal dermoid cyst is rare in childhood and exceptionally occurs in adults. Only six cases of subgaleal dermoid cyst of adult are mentioned in the literature. Most of the time, the lesion is situated on the anterior fontanelle. The treatment is surgical and the prognosis is excellent.

Adult↗
PubMed1991

Malignant melanoma arising in a dermoid cyst of the ovary.

Autopsy findings of primary malignant melanoma arising in an ovarian dermoid cyst in an 86-year-old woman are presented. The right ovary was replaced by a dermoid cyst, 14 x 9 x 9 cm in size, in which several nodular tumors with diameters less than 3.2 cm were localized. They comprised diffusely proliferating anaplastic cells with prominent nucleoli. Some of them contained melanin pigments in the cytoplasm. The tumor cells were positive for S-100 protein and ultrastructurally showed melanosomes. In addition, several benign pigmented lesions resembling dermal nevus, pigmented schwannoma, or cellular blue nevus were present in the dermoid cyst, one of which contained a malignant melanomatous component. Histologic transition between benign and malignant components and the presence of another small focus of atypical melanocytes in the benign lesion suggested that the malignant melanoma arose in close association with the previously existing benign pigmented lesions in the dermoid cyst.

Aged↗
PubMed2003

Chemical peritonitis: a rare complication of an iatrogenic ovarian dermoid cyst rupture.

Laparoscopy is the standard method for the diagnosis and treatment of ovarian dermoid cysts, which represent 10% to 15% of all ovarian tumors. This procedure offers many advantages including less postoperative pain, lower risk of wound complication, early ambulation, and more rapid convalescence. The risk of adhesion formation also is reduced. However, in the case of an ovarian dermoid cyst, the laparoscopic approach could result in chemical peritonitis caused by the spilled contents of a ruptured dermoid cyst. We report a case of chemical peritonitis after rupture of an ovarian dermoid cyst during laparoscopy. Two operations were required, and medical treatment was not beneficial. We discuss a possible new medication for the treatment of this complication and compare this case with other recent reports.

Adult↗
PubMed1999

Laparoscopic excision of ovarian dermoid cysts with controlled intraoperative spillage. Safety and effectiveness.

OBJECTIVE: To compare the operative and postoperative course in patients undergoing laparoscopy for dermoid cyst to that observed in subjects with other types of ovarian masses and of patients undergoing laparotomy for teratomas. STUDY DESIGN: Retrospective analysis. From 1994 to 1996, 49 women underwent laparoscopic cystectomy for dermoid cysts. The operative and postoperative course was compared to that of 190 patients undergoing operative laparoscopy for other adnexal masses and to that of 43 patients undergoing laparotomy for dermoid cysts from 1992 to 1996. The cysts were aspirated to reduce spillage and removed via a laparoscopic bag inserted in a 10-mm trocar. Culdotomy was never used. The abdominal cavity was abundantly flushed during the procedure and before closure. RESULTS: Dermoid cystectomy was successfully performed laparoscopically in 47 of 49 cases. Spillage occurred in 43 cases (88%), and postoperative fever occurred in 3 (6.1%). No case of peritonitis was recorded. Significant differences between laparoscopy and laparotomy were observed in the rate of bilaterality (4% vs. 25%), spillage (88% vs. 9%) and mean hospital stay (37 vs. 83 hours). When laparoscopic excision of dermoid cysts and other masses was compared, we did not observe any significant difference in operative time or complication rates, apart from transient fever. CONCLUSION: Laparoscopy is safe and effective for dermoid cysts and allows shorter hospitalization than laparotomy. As observed for other benign cysts, laparoscopy should become the technique of choice for the removal of most, if not all, ovarian dermoid cysts.

Adult↗
PubMed1981

Computer tomography of ovarian dermoid cysts.

Five patients with ovarian dermoid cysts (benign cystic teratomas) were examined by CT. The appearance of these tumours at CT as well as at conventional radiography is discussed. It is concluded that CT adds valuable information in the preoperative evaluation of cystic teratomas.

Adult↗
PubMed1997

Dermoid cyst of the penis.

A dermoid cyst of the penis has not been documented previously in the literature. We report a young Caucasian who had an important swelling of the penis dating back several months. On examination a subcutaneous mass on the dorsal aspect of the shaft and prepuce was present. A cutaneous sinus discharging purulent material was also noted above the mass. Laboratory tests including serology for syphilis and bacteriologic examination were negative. An excisional biopsy revealed a nodular lesion in the subcutaneous tissue with tufts of hair emerging from the surface. Histopathologic examination disclosed granulation tissue containing fragments of hair surrounded by granulomatous infiltrate. Serial sections allowed identification of a subcutaneous cyst. The wall was epidermoid and connected with several pilosebaceous units. A sinus tract lined by stratified squamous epithelium contiguous with the epidermis was also noted. Clinical and histopathologic differential diagnoses are discussed. Evidence for a congenital origin of this condition is given.

Adult↗
PubMed1990

[CT scanning in the diagnosis and treatment of intraorbital dermoid cyst].

39 cases of intraorbital dermoid cyst were examined by CT scanning with characteristic features of heterogeneity in the cystic content with areas of negative CT value, nonenhancement by contrast media, and excavation of the orbital walls. The precise localization of the tumor is conducive to the selection of a proper surgical approach.

Adolescent↗
PubMed1977

Dermoid cysts of the pancreas.

Pancreatic dermoid cysts are very rare. They are congenital abnormal growths arising from embryonic rests, usually appearing as a nontender abdominal mass. Abdominal pain and backaches are the usual symptoms, with or without signs of gastrointestinal obstruction. However, they may be totally asymptomatic. The treatment is surgical extirpation.

Adolescent↗
PubMed1986

Dermoid cyst: a rare tumour of the appendix.

Dermoid cyst is a rare but well recognised cause of a mass in the abdomen. As a cause of a palpable mass in the right iliac fossa, dermoid and epidermoid cysts of the caecum have hitherto been described. We here report a case of a dermoid cyst arising from the vermiform appendix.

Adult↗
PubMed1989

Huge pineal teratoma mimicking a dermoid cyst. Case report.

A case of huge pineal teratoma mimicking a dermoid cyst is reported. Although both computed tomography and surgical findings were entirely similar to those of a dermoid cyst, close histological examinations using the serial sectioning technique of a small solid portion attached to the pineal region revealed tissue components of both mesodermal and entodermal origins among mostly epidermal and dermal components. The importance of serial sectioning of the surgical specimens of seemingly a dermoid cyst is stressed.

Adult↗
PubMed2006

A 7-year history of an intratesticular mass: patient description and review of the literature about dermoid cysts of the testis.

A dermoid cyst is a particular form of a cystic teratoma. In the testis, it is very rare, with only a few cases reported in world literature. A 19-year-old patient come to our attention with a 7-year history of an intratesticular cystic mass. Sonography showed a large hypoechoic solid mass. The tumour markers alpha-fetoprotein, beta-human chorionic gondatotrophin, and lactate dehydrogenase were negative. Chest X-ray was negative. He underwent surgical exploration of the right testis and enucleation of the mass with testis preservation. At 14 month of follow-up, the patient had no complications and no recurrence of the lesion. Surgical enucleation is the treatment of choice in consideration of hormonal, psychological, and reproductive aspects. Orchiectomy should have been the treatment of choice, if the mass had substituted all testicular parenchyma and if there had been some malignant transformations.

Adult↗
PubMed1996

Dermoid cyst of the ovary: computed tomography diagnosis of an unusual case.

Dermoid cyst is a common benign tumour of the ovary. Eighty percent of these tumours are discovered in premenopausal women. The authors report a case of dermoid cyst of the left ovary, which was diagnosed in a 78-year-old-woman on the basis of computed tomography (CT) findings. Radiologic findings consistent with ovarian dermoid cyst are discussed, with reference to the role of CT as a diagnostic tool.

Aged↗
PubMed2003

[Intrapulmonary rupture of a dermoid cyst: MRI findings].

We report a case of dermoid cyst of the mediastinum ruptured into the lung. Only a few reports of ruptured mediastinal dermoid cyst have appeared in the literature. A 18-year-old female patient developed a tumor in the anterior mediastinum, which was coincidentally detected by a conventional chest X-ray. CT and MRI demonstrated two components: a cystic mediastinal mass and adjacent parenchymatous condensation. The cystic mass (no enhancement during or after injection) had a fatty structure: high-intensity T1 signal and low-intensity T2 signal. The thin wall (low-intensity signal on T1 and T2) was strongly enhanced during the systemic time and was ruptured. The parenchymatous condensation included a fatty effusion and an inflammatory reaction with the same T1 signal as the cyst, remaining slightly hyperintense on T2 with enhancement after injection. Cine-MRI demonstrated that the mass and the compressed right atrium were independent.

Adolescent↗
PubMed1999

Dermoid cyst of the spleen: report of a case.

A rare splenic dermoid cyst in an 11-year-old girl is reported herein. The patient was referred to us with the chief complaint of acute-onset abdominal pain. The lesion was demonstrated by ultrasonography, computed tomography, and magnetic resonance imaging to be a cystic lesion containing serous fluid. A splenectomy was performed. Both histopathological and immunohistochemical findings demonstrated the cyst to be a dermoid cyst of the spleen. To avoid the risk of infection following splenectomy, polyvalent pneumococcus vaccine was administered. The patient recovered uneventfully. We performed immunohistochemical studies with cytokeratin and electron microscopy to determine the origin of the cyst.

Abdominal Pain↗
PubMed1991

Orbital dermoid cysts showing conjunctival epithelium.

The orbital area is one of the most common sites for dermoid cysts. Most often these cysts are lined by keratinizing squamous epithelium; however, dermoid cysts may rarely be lined with conjunctival epithelium. We describe such a cyst and the features that distinguish it from other dermoid cysts.

Adult↗
PubMed1994

Magnetic resonance imaging and quantitative analysis of contents of epidermoid and dermoid cysts.

The intracapsular cholesterol, protein, and calcium contents of epidermoid and dermoid cysts from seven patients were compared with the signal intensities on T1-weighted spin-echo magnetic resonance (MR) images. All specimens had a paste-like consistency when resected. Epidermoid and dermoid cysts demonstrated a wide range of cholesterol and calcium contents, and epidermoid cysts were not always rich in cholesterol. Five patients had cysts with lower signal intensity than white matter, which contained more than 18.3 mg/g wet weight of protein. One of these patients had the highest cholesterol content of all seven patients (22.25 mg/g wet weight) and another had the highest calcium content (0.75 mg/g wet weight). Two patients had cysts with higher signal intensity than white matter, with protein contents of lower than 4.3 mg/g wet weight. High protein content (> 18.3 mg/g wet weight) may decrease signal intensity on T1-weighted MR images, while low protein content (< 4.3 mg/g wet weight) may increase signal intensity in epidermoid and dermoid cysts with high viscosity (paste-like consistency) contents.

Adolescent↗
PubMed2005

Congenital intracranial frontotemporal dermoid cyst presenting as a cutaneous fistula.

BACKGROUND: Intracranial extension and a cutaneous sinus tract are rarely seen with craniofacial dermoid cysts, with few cases reported in the literature. METHODS: We report a case of a 1-year-old girl who was initially seen with a cutaneous fistula of the frontotemporal region, which revealed an intracranial dermoid cyst. RESULTS: The patient underwent a right lateral orbitotomy by a bicoronal approach. The cyst was seated within the lateral orbital wall, with intracranial extension through the temporal and sphenoidal bones to the dura of the temporal lobe. Histopathologic analysis confirmed the diagnosis of a dermoid cyst. CONCLUSIONS: Craniofacial dermoid cysts may be associated with a cutaneous sinus tract and/or intracranial extension. Failure to recognize and promptly treat these lesions may lead to a progressive skeletal distortion and/or recurrent infection with a potential for meningitis or cerebral abscess. Therefore, detailed CT and MRI scans are mandatory before surgical treatment of any cutaneous fistula in the head and neck region.

Brain Neoplasms↗
PubMed1999

Fine-needle aspiration cytological features of dermoid cyst of the parotid gland: a report of two cases.

We describe the cytological features of dermoid cyst of the parotid gland the value of preoperative diagnosis by fine-needle aspiration (FNA) cytological evaluation. Both patients had painless parotid masses. On physical examination, a freely movable parotid mass was found in each case. CT scan showed a cystic mass in the parotid gland in each patient. FNA in both cases showed anucleated and nucleated squamous epithelium and keratin debris. The clinical features and cytological findings in each case were interpreted as suggestive of a dermoid cyst. Histological examination of surgical specimens confirmed the presence of a dermoid cyst of the parotid gland in each case. FNA is a reliable method for preoperative diagnosis and permits selection of an appropriate form of surgical procedure for dermoid cyst of the parotid gland.

Adult↗