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ABSTRACT: In order to minimize surgical stress and preserve organs, endoscopic or robotic surgery is often performed when conducting head and neck surgery. However, it is impossible to physically touch tumors or to observe diffusely invaded deep organs through the procedure of endoscopic or robotic surgery. In order to visualize and safely resect tumors even in these cases, we propose using an indocyanine green (ICG) fluorescence method for navigation surgery in head and neck cancer.
To determine the optimum surgical time for tumor resection after the administration of ICG based on the investigation of dynamic ICG fluorescence imaging.
Nine patients underwent dynamic ICG fluorescence imaging for 360 minutes, assessing tumor visibility at 10, 30, 60, 120, 180, and 360 minutes. All cases were scored according to near-infrared (NIR) fluorescence imaging visibility scored from 0 to 5.
Dynamic NIR fluorescence imaging under the HyperEye Medical System indicated that the greatest contrast in fluorescent images between tumor and normal tissue could be observed from 30 minutes to 1 hour after the administration of ICG. The optimum surgical time was determined to be between 30 minutes to 2 hours after ICG injection. These findings are particularly useful for detection and safe resection of tumors invading the parapharyngeal space.
ICG fluorescence imaging is effective for the detection of head and neck cancer. Preliminary findings suggest that the optimum timing for surgery is from 30 minutes to 2 hours after the ICG injection.
OncoTargets and Therapy 01/2013; 6:325-30. · 1.26 Impact Factor
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ABSTRACT: Recent advances in indocyanine green (ICG) fluorescence imaging have enabled the visualization of the blood supply to tissues. For advanced head and neck cancer, intra-arterial chemotherapy has been applied for organ preservation and improvement of the prognosis. To identify the tumor-feeding artery, through which the intra-arterial chemotherapy should be administered, CT angiography has been shown to be useful. However, the precise evaluation for oral cancer patients depends on the oral environment, that is, whether they have been treated with dental metal.
To assess the feasibility of the ICG fluorescence technique during intra-arterial chemotherapy for advanced oral cancer.
Twenty-five patients with oral cancer who were treated by intra-arterial chemotherapy were included in this study. Conventional CT angiography followed by 5mg of ICG injection was performed to confirm the areas in which the drug had dispersed. Intra-arterial chemotherapy was administered at 75mg/m(2) of CDDP. Additional information about the arteries feeding the tumors provided by ICG was evaluated.
Out of 25 cases, in 15 (56%) the blood supply to the cancer was clearly detected by CT angiography. Using the infrared ICG evaluation, the blood supply to the tumor was confirmed easily in all cases. The information obtained from fluorescence imaging was helpful for making decisions concerning the administration of chemo-agents for oral cancers.
ICG fluorescence imaging during intra-arterial chemotherapy compensated for the deficiencies of CT angiography, especially for oral cancer. ICG fluorescence provided us clearer and more useful information about the feeders to tumors.
Oral Oncology 09/2012; 48(11):1101-5. · 2.86 Impact Factor
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ABSTRACT: Supraclavicular lymph node metastasis from endometrial carcinoma is considerably rarer than metastasis from uterine cervical cancer. To date, there have been no reported cases regarding systematic neck dissection as a salvage treatment. In this report, we describe the neck dissection procedure carried out on a 74-year-old woman with supraclavicular lymph node metastasis. Our objective was to histologically determine the origin of the metastasis while simultaneously providing appropriate treatment. The patient's past medical history included two prior cases of cancer: rectal cancer 7 years earlier and endometrial adenocarcinoma 4 years earlier. We determined that middle and lower jugular neck dissection was appropriate in treating this case based on the results of our preoperative FDG-PET and tumor markers. This surgery provided histological evidence that metastasis occurred from endometrial carcinoma. Middle and lower jugular neck dissection was expected to improve the patient's prognosis without impacting the patient's active daily life. We have continued to monitor the patient closely over an extended period.
World Journal of Surgical Oncology 07/2012; 10:143. · 1.12 Impact Factor
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ABSTRACT: Neck metastasis is the most significant predictive indicator of head and neck cancer. Various treatments including surgery and chemoradiation have typically resulted in poor outcomes. As a result, we have applied progressive interventional radiology (IVR), Seldinger's method, in cases deemed to have poor prognostic factors. However, a recurring problem with the standard procedure has been cases in which the target artery cannot be successfully accessed. As a result of this limitation, we have initiated an approach whereby we proceed from the radial artery in order to control neck metastasis.
Evaluate the usefulness of superselective intra-arterial chemotherapy via the radial artery for advanced head and neck cancer. Method and Patients: From May, 1998 to December 2010, 25 patients for whom catheter insertion in the thyrocervical artery, a major branch of the subclavian artery, was impossible, were treated using superselective intra-arterial chemotherapy via the radial artery. Intra-arterial chemotherapy was administered at 100-150 mg/m2 of CDDP and 10-15 mg/m2 of DOC four times per week, with 60 Gy radiation therapy being concurrently. Analysis of the success of insertion, duration of time required for insertion to the target artery, chemotherapy effective rates, and method safety were carried out retrospectively.
For the target arteries in which catheters could not be effectively inserted using Seldinger's method, insertion was successful and CDDP was safely administered. No complications in regards to intra-arterial chemotherapy were observed. The mean time to insert the catheter into the target arteries was approximately 25 minutes. In contrast, when applying Seldinger's method the mean time was over 1 hour with the result being failure to insert the catheter within the target arteries. Working with our approach, the effective rate of chemotherapy recorded was 100%. The 5-year overall survival rate was 38%. Furthermore, the patients could walk and move freely on the day of treatment.
This novel method proved useful for the treatment of advanced head and neck cancer in poor prognostic cases in which the target arteries could not be accessed using Seldinger's method.
Nippon Jibiinkoka Gakkai Kaiho 06/2012; 115(6):625-31.
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ABSTRACT: In the following report we discuss a very rare case of malignant T-cell lymphoma of the thyroid gland that developed in a 70-year-old woman with a past history of hypothyroidism due to chronic thyroiditis. The chief complaint was a rapidly growing neck mass. CT and ultrasonographic examination revealed a diffuse large thyroid gland without a nodule extending up to 13 cm. Although presence of abnormal lymphoid cells in the peripheral blood was not found, the sIL-2 Receptor antibody and thyroglobulin measured as high as 970 U/ml and 600 ng/mL respectively. Fine needle aspiration cytology diagnosed chronic thyroiditis. A preoperative diagnosis of suspicious malignant lymphoma of the thyroid gland accompanied by Hashimoto's thyroiditis was made, and a right hemithyroidectomy was performed to definite diagnosis. Histological examination revealed diffuse small lymphocytic infiltration in the thyroid gland associated with Hashimoto's thyroiditis. Immunohistochemical examination showed that the small lymphocytes were positive for T-cell markers with CD3 and CD45RO. The pathological diagnosis was chronic thyroiditis with atypical lymphocytes infiltration. However, Southern blot analysis of tumor specimens revealed only a monoclonal T-cell receptor gene rearrangement. Finally, peripheral T cell lymphoma was diagnosed. Therefore, the left hemithyroidectomy was also performed one month later. No adjuvant therapy was performed due to the tumor stage and its subtype. The patient is well with no recurrence or metastasis 22 months after the surgical removal of the thyroid. As malignant T-cell lymphoma of the thyroid gland with Hashimoto's thyroiditis was difficult to diagnose, gene rearrangement examination needed to be performed concurrently.
World Journal of Surgical Oncology 04/2012; 10:58. · 1.12 Impact Factor
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ABSTRACT: Choline is a new PET tracer that is useful for the detection of malignant tumor. Choline is a precursor of the biosynthesis of phosphatidylcholine, a major phospholipid in the cell membrane of eukaryotic cells. Malignant tumors have an elevated level of phosphatidylcholine in cell membrane. Thus, choline is a marker of tumor malignancy.
The patient was a 51-year-old man with repeated recurrent hemangiopericytoma in the skull base. We performed Choline-PET in this patient after various treatments and compared findings with those of FDG-PET.
Choline accumulated in this tumor, but FDG did not accumulate. We diagnosed this tumor as residual hemangiopericytoma and performed the resection of the residual tumor. FDG-PET is not appropriate for skull base tumor detection because uptake in the brain is very strong.
We emphasize the usefulness of Choline-PET for the detection of residual hemangiopericytoma in the skull base after various treatments, compared with FDG-PET.
Head & Face Medicine 01/2012; 8:3.
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ABSTRACT: Recent progress in ICG (indocyanine green) fluorescence imaging has provided a means by which we can detect sentinel lymph nodes (SLNs) without the risk of exposing patients to radiation. Neck metastasis is the most significant prognostic factor. It is imperative that early metastasis can be controlled. Intra-arterial chemotherapy is performed in order to preserve organs and to improve prognosis when treating oral cancer.
Evaluate translymphatic chemotherapy targeting SLNs in patients with oral cancer using intra-arterial chemotherapy. Evaluation will be carried out through the measurement of CDDP concentrations in SLNs.
Five patients with tongue cancer (T3N0M0) were treated by intra-arterial chemotherapy as neoadjuvant chemotherapy from November 2010 to June 2011. After a week of chemotherapy, patients underwent surgical treatment including the partial resection of the tongue and neck dissection. Intra-arterial chemotherapy was administered at 50 mg/m2 of CDDP either one or two times weekly. 5 mg of ICG was administered to the lingual artery at the beginning of surgery. SLNs were detected using ICG fluorescence imaging. 0.1 g of SLNs and non-SLNs were resected in order to measure CDDP concentrations. The rests of each of the SLNs were examined intraoperatively by routine frozen pathological examination. SLNs were also identified using radioactive injection the day prior to surgery.
The mean CDDP concentrations in the SLNs and non-SLNs were 1.2 μg/g and 0.35 μg/g, respectively. Our intra- arterial infusion revealed that all metastatic lymph nodes, including SLNs, were without false negative SLNs. However, of 7 metastatic lymph nodes, one was not identified by means of conventional method.
Our findings verified the possibility that intra-arterial chemotherapy may be effective not only for organ preservation therapy, but also efficient in translymphatic chemotherapy targeting SLNs in patients with oral cancer through the use of ICG fluorescence imaging.
Head & Neck Oncology 09/2011; 3:42. · 3.13 Impact Factor
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ABSTRACT: This report describes an exceedingly rare case of adult embryonal rhabdomyosarcoma arising in the head and neck, which was initially diagnosed as a primary unknown cancer.
The patient underwent a radical neck dissection with the total excision of the tumor, which was diagnosed as embryonal rhabdomyosarcoma.
The patient received intensive adjuvant chemotherapy, and is still alive with no signs of recurrence or metastasis.
This case report demonstrates not only the rarity of this neoplasm but the importance of the differential diagnosis for planning the therapeutic strategy.
Auris, nasus, larynx 09/2011; 39(3):326-8. · 0.58 Impact Factor
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ABSTRACT: Oncocytic mucoepidermoid carcinoma is a very rare variant of mucoepidermoid carcinoma, composed predominantly of oncocytic cells. Most previously reported cases described the difficulty in histologic differentiation from other oncocytic tumors. Here we report a case of oncocytic mucoepidermoid carcinoma of parotid gland diagnosed by the detection of CRTC1-MAML2 fusion. A 53-year-old man had a left superficial parotidectomy conducted for 3-cm-sized mass. The resected tumor was composed almost exclusively of oncocytic tumor cells. With detailed histologic evaluation, scarce vacuolated tumor cells, suggestive of mucous cell of mucoepidermoid carcinoma, and one focus of tumor embolism in a vein were found, suggesting the possibility of oncocytic mucoepidermoid carcinoma. Immunohistochemically, oncocytic cells were diffusely positive for p63. Reverse transcriptase polymerase chain reaction and direct sequencing revealed CRTC1-MAML2 translocation of this tumor. To our knowledge, this report describes the first case of oncocytic mucoepidermoid carcinoma confirmed with CRTC1-MAML2 fusion. Identification of this fusion gene may help in distinguishing oncocytic mucoepidermoid carcinoma from its mimics.
Human pathology 06/2011; 42(12):2052-5. · 3.03 Impact Factor
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ABSTRACT: We present a case involving a late diagnosis of chondroblastoma of the temporal skull base involving the temporomandibular joint (TMJ). Following an initial misdiagnosis and unsuccessful treatment over a period of 5 years, the patient was referred to our department for further evaluation and possible surgical intervention for occlusal abnormalities, trismus, clicking of the TMJ, and hearing impairment. Based on preoperative immunochemical studies showing positive reaction of multinucleated giant cells for S-100 protein, the final diagnosis was chondroblastoma. The surgical approach - postauricular incision and total parotidectomy, with complete removal of the temporal bone, including the TMJ via the extended middle fossa - was successful in preserving facial nerves and diminishing clinical manifestations. This study highlights a misdiagnosed case in an effort to underline the importance of medical examinations and accurate differential diagnosis in cases involving any tumor mass in the temporal bone.
Case Reports in Oncology 01/2011; 4(1):74-81.
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ABSTRACT: Malignant cells show increased uptake, which is considered to be facilitated by glucose transporters (GLUTs). Increased GLUT-1 expression has been reported in many human cancers. We hypothesized that a oral squamous cell carcinoma, characterized by high frequency of lymph node metastasis, distant metastasis or local recurrences, was associated with GLUT-1 overexpression in invasion front.
GLUT-1 immunostaining in invasion front was studied on 24 oral squamous cell carcinomas, and revealed the correlation with the clinical characteristics.
The analysis showed that all oral squamous cell carcinoma patients and GLUT-1 expression correlated the depth of the tumors (P = 0.023 < 0.05). Furthermore the survival of patients who had overexpression of invasion front was significant shorter than that of patients with GLUT-1 weakly positive (P = 0.046 < 0.05). No significant association was noted between GLUT-1 immunostaining and either age, gender, subsites, tumor size, or lymph node status.
The present study shows that GLUT-1 served as a marker indicating that tumors with deep invasion tended to result in a worse prognosis in patients due to either lymph node metastasis, a recurrence of the primary lesion or distant metastasis.
Journal of Oral Pathology and Medicine 09/2009; 39(1):74-8. · 1.63 Impact Factor
