Breast Cancer Following Hodgkin’s Disease: The Experience of the University of Florence

Current overview and special considerations for second breast cancer in Hodgkin lymphoma survivors

Second breast cancer (SBC) is the most common solid cancer among Hodgkin Lymphoma (HL) female survivors. We reviewed the related modifying risk factors, radiation-induced carcinogenesis, tumors characteristics, management specificities, prevention and surveillance modalities based on current evidence. The risk of developing SBC may be influenced essentially by the age at HL treatment, follow-up latency, dose of irradiation received and the extent of irradiated field. SBCs generally develop at younger age, they are often bilateral, and exhibit more aggressive biological features and worse prognosis. No firm answer about the benefits of breast surveillance is provided by literature, but compelling evidence tends toward a clinical benefit in early detection. Increasing awareness among health providers' care and current survivors as well as the implementation of screening measures is crucial. Great efforts are ongoing in individualizing treatment strategies for future HL patients and response-adapted approaches are holding promise in prevention of these second malignancies.

Radiation-associated breast cancers in a late-effects cohort: Long-term surveillance is essential

AIMS

Survivors of childhood, adolescent, and young adulthood malignancies have an increased risk of subsequent primary malignancies, particularly after exposure to therapeutic radiation. This study aims to evaluate the mode of surveillance and surveillance compliance, incidence and mode of detection of breast cancer, breast cancer phenotype, and outcomes after radiation-associated breast cancer (RBC) in a late-effects cohort.

METHODS

Women exposed to therapeutic radiation attending the late effects service from 1st January 2000 to 20th February 2013. All invasive and in-situ cancers, benign tumors, and deaths were evaluated. The incidence of breast cancer was compared to the Australian general population. Compliance with breast surveillance recommendations, clinicopathological features, and management of breast cancers were examined.

RESULTS

The prevalence of RBC was 17.1%. Twenty-eight cases of RBC occurred in 24 women, out of 140 women exposed to chest radiation. Patients whose first attendance was ≥15 years after radiation exposure experienced the highest incidence of RBC at 23%. The incidence of breast cancer was 11.2 times the general population (P < .001). Compliance with surveillance mammography was observed in 18.4%. Breast cancers diagnosed after the first attendance to the service were more likely screen-detected (P = .002). Most were hormone receptor positive (84.0%), invasive ductal carcinomas (82.1%), and managed with mastectomy (89.3%).

CONCLUSIONS

Patients attending a dedicated late effects service have a high burden of subsequent malignancies generally occurring after long latency. Judicious management with adherence to long-term surveillance guidelines is advocated.

Breast Cancer, Secondary Breast Cancers in Childhood Cancer Male Survivors-Characteristics and Risks

PURPOSE

Male breast cancer (MBC) is uncommon, accounting for less than 1% of all breast cancers. Secondary breast cancers among childhood cancer survivors have been well described in the literature, but less is known about MBC.

METHODS AND MATERIALS

We carried out an analysis in a cohort of 7019 five-year survivors of a solid childhood (aged ≤20 years) cancer treated in France before 2001 and followed for an average of 20 years and compared breast cancers occurring in both men and women.

RESULTS

Among the 7019 survivors, 4 out of 3893 male survivors developed breast cancer, compared with 99 out of 3126 female survivors. All of the men had a history of radiation therapy. The 4 men with MBC had estrogen receptors and 3 had progesterone receptors.

CONCLUSIONS

MBC is a rare second malignancy among childhood cancer survivors. Receipt of radiation therapy is a recognized risk factor, but more data about eventual genetic mutations are necessary. Regular screening based only on a history of radiation therapy is not recommended; however, attention must be given in the case of suspicious symptoms.

Volume effects of radiotherapy on the risk of second primary cancers: A systematic review of clinical and epidemiological studies

As modern radiotherapy, including intensity-modulated techniques, is associated with high dose gradients to normal tissues and large low-to-moderate dose volumes, the assessment of second primary cancer (SPC) risks requires quantification of dose-volume effects. We conducted a systematic review of clinical and epidemiological studies investigating the effect of the irradiated volume or dose-volume distribution to the remaining volume at risk (RVR) on SPC incidence. We identified eighteen studies comparing SPC risks according to the irradiated volume (i.e., in most studies, the size or number of fields used), and four studies reporting risk estimates according to the dose distribution to the RVR (after whole-body dose reconstruction). An increased risk of SPCs (mainly breast and lung cancers) with extended radiotherapy was observed among patients treated for Hodgkin lymphoma or childhood cancers. However, normal tissue dose distribution was not estimated, limiting the interpretation of those results in terms of volume effects on organs at risk. Studies considering whole-body exposures quantified dose-response relationships for point dose estimates, without accounting for dose-volume distributions. Therefore, they disregarded possible tissue effects (e.g. bystander and abscopal effects, stem cell repopulation) which may play a role in the induction of SPCs. Currently, there is no clinical or epidemiological information about a possible role of high dose gradients in surrounding organs, or increasing volumes of distant tissues exposed to low doses, in the risk of SPCs. Opportunities for future research nevertheless now exist, since methods and tools for estimating individual whole-body dose-volume distributions in large patient populations have been developed.

Optimisation of chemotherapy and radiotherapy for untreated Hodgkin lymphoma patients with respect to second malignant neoplasms, overall and progression-free survival: individual participant data analysis

BACKGROUND

Efficacy and the risk of severe late effects have to be well-balanced in treatment of Hodgkin lymphoma (HL). Late adverse effects include secondary malignancies which often have a poor prognosis. To synthesise evidence on the risk of secondary malignancies after current treatment approaches comprising chemotherapy and/or radiotherapy, we performed a meta-analysis based on individual patient data (IPD) from patients treated for newly diagnosed HL.

OBJECTIVES

We investigated several questions concerning possible changes in the risk of secondary malignancies when modifying chemotherapy or radiotherapy (omission of radiotherapy, reduction of the radiation field, reduction of the radiation dose, use of fewer chemotherapy cycles, intensification of chemotherapy). We also analysed whether these modifications affect progression-free survival (PFS) and overall survival (OS).

SEARCH METHODS

We searched MEDLINE and Cochrane CENTRAL trials databases comprehensively in June 2010 for all randomised trials in HL since 1984. Key international trials registries were also searched. The search was updated in March 2015 without collecting further IPD (one further eligible study found) and again in July 2017 (no further eligible studies).

SELECTION CRITERIA

We included randomised controlled trials (RCTs) for untreated HL patients which enrolled at least 50 patients per arm, completed recruitment by 2007 and performed a treatment comparison relevant to our objectives.

DATA COLLECTION AND ANALYSIS

Study groups submitted IPD, including age, sex, stage and the outcomes secondary malignant neoplasm (SMN), OS and PFS as time-to-event data. We meta-analysed these data using Petos method (SMN) and Cox regression with inverse-variance pooling (OS, PFS) for each of the five study questions, and performed subgroup and sensitivity analyses to assess the applicability and robustness of the results.

MAIN RESULTS

We identified 21 eligible trials and obtained IPD for 16. For four studies no data were supplied despite repeated efforts, while one study was only identified in 2015 and IPD were not sought. For each study question, between three and six trials with between 1101 and 2996 participants in total and median follow-up between 6.7 and 10.8 years were analysed. All participants were adults and mainly under 60 years. Risk of bias was assessed as low for the majority of studies and outcomes. Chemotherapy alone versus same chemotherapy plus radiotherapy. Omitting additional radiotherapy probably reduces secondary malignancy incidence (Peto odds ratio (OR) 0.43, 95% confidence interval (CI) 0.23 to 0.82, low quality of evidence), corresponding to an estimated reduction of eight-year SMN risk from 8% to 4%. This decrease was particularly true for secondary acute leukemias. However, we had insufficient evidence to determine whether OS rates differ between patients treated with chemotherapy alone versus combined-modality (hazard ratio (HR) 0.71, 95% CI 0.46 to 1.11, moderate quality of evidence). There was a slightly higher rate of PFS with combined modality, but our confidence in the results was limited by high levels of statistical heterogeneity between studies (HR 1.31, 95% CI 0.99 to 1.73, moderate quality of evidence). Chemotherapy plus involved-field radiation versus same chemotherapy plus extended-field radiation (early stages) . There is insufficient evidence to determine whether smaller radiation field reduces SMN risk (Peto OR 0.86, 95% CI 0.64 to 1.16, low quality of evidence), OS (HR 0.89, 95% C: 0.70 to 1.12, high quality of evidence) or PFS (HR 0.99, 95% CI 0.81 to 1.21, high quality of evidence). Chemotherapy plus lower-dose radiation versus same chemotherapy plus higher-dose radiation (early stages). There is insufficient evidence to determine the effect of lower-radiation dose on SMN risk (Peto OR 1.03, 95% CI 0.71 to 1.50, low quality of evidence), OS (HR 0.91, 95% CI 0.65 to 1.28, high quality of evidence) or PFS (HR 1.20, 95% CI 0.97 to 1.48, high quality of evidence). Fewer versus more courses of chemotherapy (each with or without radiotherapy; early stages). Fewer chemotherapy courses probably has little or no effect on SMN risk (Peto OR 1.10, 95% CI 0.74 to 1.62), OS (HR 0.99, 95% CI 0.73 to1.34) or PFS (HR 1.15, 95% CI 0.91 to 1.45).Outcomes had a moderate (SMN) or high (OS, PFS) quality of evidence. Dose-intensified versus ABVD-like chemotherapy (with or without radiotherapy in each case). In the mainly advanced-stage patients who were treated with intensified chemotherapy, the rate of secondary malignancies was low. There was insufficient evidence to determine the effect of chemotherapy intensification (Peto OR 1.37, CI 0.89 to 2.10, low quality of evidence). The rate of secondary acute leukemias (and for younger patients, all secondary malignancies) was probably higher than among those who had treatment with standard-dose ABVD-like protocols. In contrast, the intensified chemotherapy protocols probably improved PFS (eight-year PFS 75% versus 69% for ABVD-like treatment, HR 0.82, 95% CI 0.7 to 0.95, moderate quality of evidence). Evidence suggesting improved survival with intensified chemotherapy was not conclusive (HR: 0.85, CI 0.70 to 1.04), although escalated-dose BEACOPP appeared to lengthen survival compared to ABVD-like chemotherapy (HR 0.58, 95% CI 0.43 to 0.79, moderate quality of evidence).Generally, we could draw valid conclusions only in terms of secondary haematological malignancies, which usually occur less than 10 years after initial treatment, while follow-up within the present analysis was too short to record all solid tumours.

AUTHORS' CONCLUSIONS

The risk of secondary acute myeloid leukaemia and myelodysplastic syndrome (AML/MDS) is increased but efficacy is improved among patients treated with intensified chemotherapy protocols. Treatment decisions must be tailored for individual patients. Consolidating radiotherapy is associated with an increased rate of secondary malignancies; therefore it appears important to define which patients can safely be treated without radiotherapy after chemotherapy, both for early and advanced stages. For early stages, treatment optimisation methods such as use of fewer chemotherapy cycles and reduced field or reduced-dose radiotherapy did not appear to markedly affect efficacy or secondary malignancy risk. Due to the limited amount of long-term follow-up in this meta-analysis, further long-term investigations of late events are needed, particularly with respect to secondary solid tumours. Since many older studies have been included, possible improvement of radiotherapy techniques must be considered when interpreting these results.

Second malignancies in Hodgkin's disease: A review of the literature and report of a case with a secondary Lennert's lymphoma

A small percentage of patients treated for Hodgkin's disease are at risk of developing a second malignancy. The appearance of secondary malignancies such as leukemia, carcinoma or non-Hodgkin's lymphomas may be attributed to the mutagenic effects of chemotherapy and/or radiotherapy. Most secondary non-Hodgkin's lymphomas are of the B-cell type, but isolated cases were reportedly of a T-cell lineage. A review of the literature pertaining to the development of secondary peripheral T-cell lymphomas is presented along with the description of an additional case. The latter developed in the tonsil and was diagnosed as a Lennert's lymphoma (lymphoepithelioid T cell lymphoma)on histological and immunological grounds. This report also reviews the development of a of peripheral T-cell lymphoma described in patients following chemotherapy and/or radiotherapy for Hodgkin's disease.

Multiple cutaneous angiosarcomas after breast conserving surgery and bilateral adjuvant radiotherapy: an unusual case and review of the literature

Breast angiosarcomas (BAs) are rare but serious events that may arise after radiation exposure. Disease outcome is poor, with high risk of local and distant failure. Recurrences are frequent also after resection with negative margins. The spectrum of vascular proliferations associated with radiotherapy in the setting of breast cancer has expanded, including radiation-associated atypical vascular lesions (AVLs) of the breast skin as a rare, but well-recognized, entity. Although pursuing a benign behavior, AVLs have been regarded as possible precursors of postradiation BAs. We report an unusual case of a 71-year-old woman affected by well-differentiated bilateral cutaneous BA, diagnosed 1.9 years after adjuvant RT for synchronous bilateral breast cancer. Whole-life clinical followup is of crucial importance in breast cancer patients.

Risk, characteristics, and prognosis of breast cancer after Hodgkin's lymphoma

PURPOSE

To assess breast cancer (BC) risk after Hodgkin's lymphoma (HL) and compare characteristics, risk of second BC, and prognosis of patients with these BCs with patients with first primary BC.

PATIENTS AND METHODS

We considered all 9,620 women with HL recorded in the Surveillance, Epidemiology and End Results dataset in 1973-2007. We calculated age-period standardized incidence ratios of BC. We compared patient, tumor, and treatment characteristics, risk of second BC, and prognosis between patients with BC after HL (n = 316) and patients with other BCs occurring during the same period (n = 450,413) using logistic regression and Cox models adjusted for confounders.

RESULTS

HL patients had a 2.4-fold higher risk for developing BC (95% confidence interval [CI], 2.2-2.7) than the general population. Age at HL diagnosis and radiation therapy influenced this risk. Compared with first primary BCs, BCs after HL were diagnosed at a younger age, at an earlier stage, were less frequently hormone receptor positive, were located more frequently in external quadrants, and were less frequently treated using radiotherapy. These patients had a higher risk (adjusted hazard ratio [HR], 2.85; 95% CI, 1.79-4.53) for developing a second BC and had a higher BC mortality risk (adjusted HR, 1.36; 95% CI, 1.05-1.76). The higher mortality risk was only partly explained by the higher occurrence rate of a second BC.

CONCLUSION

HL survivors have a higher risk for developing BC, their BCs are more aggressive, they have a higher risk for a second BC occurrence, and they have a poorer prognosis. Guidelines of care should be adapted to decrease the impact of BC in these high-risk patients.

[Breast conserving surgery in locoregional treatment of breast carcinoma after Hodgkin lymphoma]

PURPOSE

To report characteristics and outcome of breast cancer after irradiation for Hodgkin lymphoma with special focus on breast conservation surgery.

PATIENTS AND METHODS

Medical records of 72 women who developed either ductal carcinoma in situ or stage I-III invasive carcinoma of the breast after Hodgkin lymphoma between 1978 and 2009 were retrospectively reviewed.

RESULTS

Median age at Hodgkin lymphoma diagnosis was 23 years old. Median total dose received by the mediastinum was 40 Gy, mostly by a mantle field technique. Breast cancer occurred after a median time interval of 21 years. Ductal invasive carcinoma and ductal carcinoma in situ represented respectively 71% and 19% of the cases. Locoregional treatment for breast cancer consisted of mastectomy with or without radiotherapy in 39 patients and of lumpectomy with or without adjuvant radiotherapy in 32 patients. The isocentric lateral decubitus radiation technique was used in 17 patients after breast conserving surgery (57%). With a median follow-up of 7 years, 5-year overall survival rate and locoregional control rate were respectively 74.5% and 82% for invasive carcinoma and 100% and 92% for in situ carcinoma. Thirteen patients died of progressive breast cancer and contralateral breast cancer was diagnosed in ten patients (14%).

CONCLUSIONS

Breast conserving treatment can be an option for breast cancers that occur after Hodgkin lymphoma despite prior thoracic irradiation. It should consist of lumpectomy and adjuvant breast radiotherapy with use of adequate techniques, such as the lateral decubitus isocentric position.

Locoregional treatment for breast carcinoma after Hodgkin's lymphoma: the breast conservation option

PURPOSE

To report clinical and pathologic characteristics and outcome of breast cancer (BC) after irradiation for Hodgkin's lymphoma (HL) in women treated at the Institut Curie, with a special focus on the breast-conserving option.

METHODS AND MATERIALS

Medical records of 72 women who developed either ductal carcinoma in situ or Stage I-III invasive carcinoma of the breast after HL between 1978 and 2009 were retrospectively reviewed.

RESULTS

Median age at HL diagnosis was 23 years (range, 14-53 years). Median total dose received by the mediastinum was 40 Gy, mostly by a mantle-field technique. Breast cancers occurred after a median interval of 21 years (range, 5-40 years). Ductal invasive carcinoma and ductal carcinoma in situ represented, respectively, 51 cases (71%) and 14 cases (19%). Invasive BCs consisted of 47 cT0-2 tumors (82%), 5 cN1-3 tumors (9%), and 20 Grade 3 tumors (35%). Locoregional treatment for BCs consisted of mastectomy with (3) or without (36) radiotherapy in 39 patients and lumpectomy with (30) or without (2) adjuvant radiotherapy in 32 patients. The isocentric lateral decubitus radiation technique was used in 17 patients after breast-conserving surgery (57%). With a median follow-up of 7 years, 5-year overall survival rate and locoregional control rate were, respectively, 74.5% (95% confidence interval [CI], 64-88%) and 82% (95% CI, 72-93%) for invasive carcinoma and 100% (95% CI, 100 -100%) and 92% (95% CI, 79-100%) for in situ carcinoma. In patients with invasive tumors, the 5-year distant disease-free survival rate was 79% (95% CI, 69-91%), and 13 patients died of progressive BC. Contralateral BC was diagnosed in 10 patients (14%).

CONCLUSIONS

Breast-conserving treatment can be an option for BCs that occur after HL, despite prior thoracic irradiation. It should consist of lumpectomy and adjuvant breast radiotherapy with use of adequate techniques, such as the lateral decubitus isocentric position, to protect the underlying heart and lung.

Breast cancer occurred after Hodgkin's disease: clinico-pathological features, treatments and outcome: analysis of 214 cases

BACKGROUND

Secondary tumours (ST) represent a major concern in survivors of Hodgkin's disease (HD). Breast cancer (BC) is the most frequent ST among young treated women.

MATERIAL AND METHODS

One hundred and eighty-nine women treated for HD by radiotherapy (RT) and/or chemotherapy (CT) subsequently developed 214 BCs.

RESULTS

Median age at HD diagnosis was 25 years (34% were less than 20). Median interval between HD and BC was 18.6 years, with a 42-year median age at first BC. According to the TNM classification, there were 30 (14%) T0 (non palbable lesions), 86 (40%) T1, 56 (26%) T2, 13 (6%) T3T4 and 29 (14%) Tx. There were 25 (13.2%) contralateral BC. 160 (75%) and 15 (7%) tumours were infiltrating ductal and lobular carcinomas, 7 (3.3%) were other subtypes and 27 (22%) DCIS. The rate of axillary nodal involvement was 32%. Among 203 operated tumours, 79 (39%) were treated by breast conserving surgery (BCS), with RT in 56 (71%) cases. CT and hormonal treatment were delivered in 51% and 45% of the patients. With a 50-month median follow-up, local recurrence occurred in 12% of the tumours (9% after mastectomy, 21% after lumpectomy alone and 13.7% after lumpectomy with RT). Metastasis occurred in 47 (26%) patients. The risk factors were pN+, pT, high SBR grade and young age (< 50 years). The ten-year overall and specific survival rates were 53% and 63.5%, respectively. The ten-year specific survival rates were 79% for pT0T1T2, 48% for pT3T4 (p = 0.0002) and 79% for pN0 versus 38.5% for pN+ (p = 0.00026). Among 67 deaths, 43 (73%) were due to BC.

CONCLUSION

Patients and physicians should be aware that BC is the most frequent secondary tumour in young women treated for HD. The new RT modalities (lower doses and involved fields) may decrease the risk in the future. However, these women require a careful monitoring as from 8 to 10 years after HD treatment, combining mammography, ultrasound and MRI according to several ongoing studies. BC with whole breast irradiation is feasible in some selected cases.