|Year : 2018 | Volume
| Issue : 2 | Page : 157-159
Paclitaxel-induced dermal hypersensitivity lesions: 2-deoxy-2-[18F]fluoro-D-glucose positron emission tomography/computed tomography
Inci Uslu Biner1, Ebru Tatci1, Berna Akinci Ozyurek2, Ozlem Ozmen1
1 Department of Nuclear Medicine, Ataturk Chest Diseases and Thoracic Surgery Training and Research Hospital, Ankara, Turkey
2 Department of Chest Diseases, Ataturk Chest Diseases and Thoracic Surgery Training and Research Hospital, Ankara, Turkey
|Date of Web Publication||27-Feb-2018|
Dr. Inci Uslu Biner
Department of Nuclear Medicine, Ataturk Chest Diseases and Thoracic Surgery Training and Research Hospital, Sanatoryum Caddesi, Kecioren, 06280 Ankara
Source of Support: None, Conflict of Interest: None
| Abstract|| |
Paclitaxel is frequently used for the treatment of patients with nonsmall cell lung cancer. Hypersensitivity reactions (HSRs) have been one of the toxicities observed with administration of paclitaxel. Here, we presented a case of a 49-year-old man with a history of right lung mass proven by biopsy to be a nonsmall cell lung cancer (squamous cell carcinoma) who developed HSR during therapy. In addition to the hypermetabolic primary malignancy, a positron emission tomography/computed tomography (PET/CT) scan showed multiple hypermetabolic skin lesions at several parts of the body. These cutaneous lesions were resolved in the restaging PET/CT scan performed after completion of the six cycles of chemotherapy. This is the first documented case of comparative PET/CT findings of a paclitaxel-induced hypersensitivity.
Keywords: 2-deoxy-2-[18F]fluoro-D-glucose positron emission tomography/computed tomography, hypersensitivity reaction, lung cancer, paclitaxel
|How to cite this article:|
Biner IU, Tatci E, Ozyurek BA, Ozmen O. Paclitaxel-induced dermal hypersensitivity lesions: 2-deoxy-2-[18F]fluoro-D-glucose positron emission tomography/computed tomography. Lung India 2018;35:157-9
|How to cite this URL:|
Biner IU, Tatci E, Ozyurek BA, Ozmen O. Paclitaxel-induced dermal hypersensitivity lesions: 2-deoxy-2-[18F]fluoro-D-glucose positron emission tomography/computed tomography. Lung India [serial online] 2018 [cited 2020 Jan 21];35:157-9. Available from: http://www.lungindia.com/text.asp?2018/35/2/157/226204
| Introduction|| |
Paclitaxel is a cytotoxic antitumor agent that is widely used for the treatment of various malignancies including lung cancer. Hypersensitivity reactions (HSRs) are one of the adverse events in paclitaxel usage. They most commonly occur after the first or second administration of the drug. Various clinical symptoms from mild rash to severe anaphylaxis can be seen.
The exact etiology of HSR to paclitaxel and docetaxel is not clearly known. Glucocorticoids with or without H1–H2 receptor antagonist are routinely used to prevent these adverse effects. Desensitization protocols are used to continue the administration of the drug. Skin testing can be helpful.,,
We describe the hypermetabolic skin lesions on interim (after two cycles) 2-deoxy-2-[18F] fluoro-D-glucose positron emission tomography/computed tomography (18F-FDG PET/CT) scan of a man with lung cancer who developed severe cutaneous hypersensitivity to paclitaxel.
| Case Report|| |
Here, we present a case of a 49-year-old man with a history of right lung mass proven by biopsy to be a nonsmall cell lung cancer (squamous cell carcinoma). The first and second dose of paclitaxel (200 mg m2) combined with cisplatin was infused within 1 h with standard premedications. An 18F-FDG PET/CT scan performed 3 weeks after the second cycle of chemotherapy revealed multiple hypermetabolic skin lesions at several parts of the body including scalp, neck, chest, abdomen, and back, right inguinal region with maximum standardized uptake value of 4.31 [[Figure 1], arrows] mimicking probable skin metastases in addition to hypermetabolic mass in the right lower lobe and hypermetabolic mediastinal lymph nodes. On physical examination, severe painful and pruritic rashes on his scalp, neck, chest, abdomen, and back were inspected. It was retrospectively learned that he developed a widespread paclitaxel-induced drug eruption during the therapy within 2 days after the administration of the second cycle. Radiologic and clinical examination by a dermatologistindicated first the drug HSR as the underlying cause of these hypermetabolic skin lesions. Biologic tests revealed no autoimmunity. He reported not to have any skin lesions after the prior cycle of chemotherapy, and there were not any skin lesions at the first 18F-FDG PET/CT performed for staging, as well. Based on the clinical course and physical examination, skin biopsy did not need to be performed. Successful symptomatic management with oral (dexamethasone 4 mg/day) and topical treatment produced prominent regression of the lesions. The patient was re-exposed to taxanes through desensitization protocol, and these allowed him to complete the six courses of therapy that includes paclitaxel. Subsequently, 18F-FDG PET/CT performed after 3 weeks after completion of six cycles of chemotherapy showed resolution of the skin lesions in addition to the regression in primary malignancy [[Figure 2], arrows], which correlated with clinical resolution of the skin lesions without any scarring.
|Figure 1: Maximum intensity projection image of attenuation-corrected 2-deoxy-2-[18F] fluoro-D-glucose positron emission tomography/computed tomography taken 3 weeks after he had received second cycle of chemotherapy shows multiple focal hypermetabolic skin lesions located at scalp, neck, chest, abdomen, back (black arrow). (a) Axial computed tomography and axial positron emission tomography/computed tomography images of the thoracal skin lesions are seen, respectively. (b and c) (White and black arrows) In the light of clinical course of the lesion and drug exposure history, paclitaxel-induced hypersensitivity is diagnosed|
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|Figure 2: Prominent regression of these hypermetabolic skin lesions on the maximum intensity projection and axial positron emission tomography/computed tomography images (a and c) (black arrows) and the resolution of the skin lesions on axial computed tomography images of the thoracic region (b) (white arrow) which are taken when the six courses of chemotherapy with docetaxel and cisplatin and thoracal radiotherapy had finished|
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| Discussion|| |
In view of the extensive use of paclitaxel in lung cancers, it is important to be aware of the possibility of drug hypersensitivity in these patients. The patients can have the reaction after the first or second course of therapy. HSR was developed within 2 days after the second paclitaxel infusion in our patient.
18F-FDG PET has been shown to be useful in the evaluation of many tumors including lung cancers. However, abnormal FDG uptake is not specific to malignancy, and inflammatory or infectious processes must be considered as well. Inflammatory cells (neutrophils and activated macrophages) at the sites of inflammation or infection will show increased FDG accumulation.,
Cutaneous 18F-FDG uptakes may be an incidental finding at PET/CT scans. Some benign skin lesions that show high 18F-FDG accumulations may mimic malignancies and lead to false positive interpretations.,,
Abnormal skin uptake can be easily misinterpreted as skin metastases such as our case. As demonstrated in this case, benign skin lesions showing FDG uptake such as drug eruptions must be ruled out in patients with carcinoma.,
Correlation with clinical findings can avoid false positive interpretation. In our patient, the additional finding of abnormal multiple skin uptakes of FDG in association with clinically evident rashes resulted in the correct diagnosis of drug hypersensitivity. He also had a dramatic response to the symptomatic therapy with oral and topical corticosteroids. Restaging 18F-FDG PET/CT scan performed after completion of six cycles of chemotherapy showed resolution of these lesions.
Clinical and imaging findings together may aid the distinction of benign from malignant lesions, which is highly relevant to prognosis.
Adverse skin reactions associated with the use of paclitaxel have been reported in the literature. To our knowledge, comparative 18F-FDG PET/CT findings of paclitaxel-induced cutaneous hypersensitivity lesions have not previously been described.
| Conclusions|| |
The possibility of false positive inflammatory processes must be considered when abnormal skin FDG uptake is examined in 18F-FDG PET/CT scans. The presence of these hypersensitivity lesions should be taken into account during paclitaxel treatment. We would like to highlight the importance of correlation with clinical findings that can avoid false positive interpretation of these lesions.
Declaration of patient consent
The authors certify that they have obtained all appropriate patient consent forms. In the form the patient(s) has/have given his/her/their consent for his/her/their images and other clinical information to be reported in the journal. The patients understand that their names and initials will not be published and due efforts will be made to conceal their identity, but anonymity cannot be guaranteed.
Financial support and sponsorship
Conflicts of interest
There are no conflicts of interest.
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[Figure 1], [Figure 2]