Cervical teratoma is a rare form of teratoma in neonates and is an unusual cause of cervical masses in them. Teratomas are unusual tumors derived from all 3 germs cell layers: endoderm, mesoderm, and ectoderm, with varying proportions. The cervical teratoma is a rare entity. Its prognosis mostly depends on the risk of neonatal respiratory distress, its extension and potential malignancy. Surgical management must be as complete as possible to avoid recurrences and malignant transformation. We report a case of a cervical immature teratoma in an infant with total excision and cure. No recurrence has been reported. The aim of our study is to review the diagnosis, management and outcomes of congenital cervical teratomas. Cervical teratoma although uncommon should be considered in the differential diagnosis of neck masses in neonates. Teratomas are rare tumors derived from all three germ cell layers affecting the neck in 3% of all cases. An early complete surgical approach to congenital cervical teratomas allows good results with low rates of complication and recurrence.

Ovarian strumal carcinoid is a rare tumor in which thyroid (struma) and carcinoid components coexist. The disease is generally considered to be a borderline malignancy, however, cases with metastatic disease have been described. No data in the literature are available to guide diagnosis and therapy.
We performed a pooled analysis and a systematic review of histopathological-confirmed strumal carcinoid cases published in the literature using the following keywords: \"strumal carcinoid of the ovary\", \"strumal carcinoid case report\". A case of strumal carcinoid tumor diagnosed and followed-up at the Medical Oncology Unit of Spedali Civili (Brescia, Italy) was also described and included.
Sixty-six eligible publications were identified, providing data from one hundred and seventeen patients, plus a case diagnosed at our institution. At presentation, among the eighty-eight patients with symptomatic disease, 37% of patients suffered from abdominal distention and 49% from pain due to a growing abdominal tumor mass, 37% from constipation (peptide YY was analyzed in only nine of them, resulting above the physiologic range). Surgery was the primary therapy in 99% of the patients. Three patients had metastatic disease at diagnosis and five patients underwent recurrence after radical surgery. Histology at disease recurrence concerned the thyroid component in two patients, the carcinoid component in two patients, both histologies in one patient. Median disease-free survival and overall survival in this series were not attained.
Strumal carcinoid of the ovary generally presents a benign behavior and surgery is curative in most cases. However, a small group of patients with this disease can undergo disease recurrence due to both the thyroid and the neuroendocrine (carcinoid) components. A follow-up in radically operated patients is therefore needed, particularly in those with a voluminous disease at diagnosis.

Several tumors arise from different structures within the mediastinum. Although each type of mediastinal tumor has a predilection for a specific compartment, the progression of growth from one compartment to another can occur. The anterior mediastinum is the site of several tumors that pose interesting diagnostic and therapeutic challenges to thoracic surgeons. The anterior mediastinum is the seat of the majority of neoplastic growths within the mediastinum. Thymomas and lymphomas are the most common pathologies of the anterior mediastinum. Tumors of mesenchymal origin (hemangioma, lymphangioma, lipomas) and their malignant counterparts may occur in any of the mediastinal compartments. Less common tumors of the anterior mediastinal compartment are ectopic thyroid and parathyroid tumors, germ cell tumors, mesenchymal origin tumors, hemangiomas, and cervicomediastinal hygromas. Most of the mediastinal growths usually remain clinically silent until they become large and cause compressive symptoms. Here, we present a case series of five anterior mediastinal tumors consisting of solitary benign teratoma, fibrous benign tumor, malignant fibrosarcoma, hamartomatous chondroma, and malignant thymoma.

Spinal cord teratomas are rare. There are few reports of teratomas affecting the cervical spine and their association with spondylotic radiculopathy has not been described. A 59-year-old woman with history of fecal incontinence attended with cervical radicular pain radiating to upper limbs. Physical examination showed distal muscle hypotrophy and abolishment of bicipital, tricipital, and brachioradialis reflexes of the right arm, preserving proximal strength. Also, hiporreflexia and loss of proprioception in the right lower limb was observed. Magnetic resonance imaging showed an intramedullary mass at C7-T1, accompanied by intervertebral disk protrusions and dural sac compressions at the same level. One-stage posterior-anterior operative approach for tumor resection, decompression of the radiculopathy and replacement of intervertebral discs was performed. The histopathological diagnosis was for a mature teratoma. We described the first case of an intramedullary cervical teratoma associated with radiculopathy in an adult, providing evidence of rare long-lasting teratomas affecting the cervical spine.

Teratomas is a germ cell tumors, which is rare in the upper palatal and lingual. This article presents a patient with teratomas on the palate and tongue accompanied with cleft palate. The clinical manifestations and histopathological characteristics of teratomas are discussed according to relevant literatures.
畸胎瘤是一种生殖细胞来源的肿瘤，发生于上腭及舌的畸胎瘤罕见。本文报道1例上腭及舌畸胎瘤伴不完全性腭裂的病例，并结合相关文献对其临床表现、组织病理学特点等进行讨论。.

Primary carcinoma of the fallopian tube represents <1% of all gynecological tumors, and benign tumors of the fallopian tube are encountered even less frequently. Mature teratomas of the fallopian tube and ovary are extremely rare, and to date, only a few cases have been reported. A 31-year-old woman presented with a left adnexal mass that was identified by pelvic ultrasonography during a regular checkup. The patient underwent laparoscopic left salpingectomy and left ovarian cystectomy. Histopathological examination of the removed tissue revealed features compatible with mature cystic teratomas of both the left fallopian tube and ovary. At 26 months post-surgery, the patient underwent a cesarean section at 39+2 weeks of gestation. A right ovarian cystic mass was incidentally identified during the procedure. Right ovarian cystectomy was performed, and histopathological analysis revealed the mass to be a teratoma. The patient continued to receive annual follow-up after surgical intervention and demonstrated no evidence of disease at a routine 2-year follow-up examination. The discussion of the present case is followed by a brief review of the literature.

Gastric teratoma is a rare tumor, accounting for less than 1 % of all teratomas in infants & children. To date, only about 102 cases have been reported in the literature. A 10 month old infant was brought with a history of upper abdominal mass which was otherwise asymptomatic. On evaluation it was diagnosed as gastric teratoma. On laparotomy the mass was found to be originating from lesser curvature of stomach. Mass was excised and histopathologically it was a mature cystic teratoma. No recurrence after 18 months of follow-up.

Teratomas of the head and neck due to their obscure origin, bizarre microscopic appearance, unpredictable behaviour and often dramatic clinical presentation are a clinical surprise. This article focuses on pediatric head and neck teratomas and on their diversity and rarity and also reviews the recent terminology of this group of tumours.