Cancer of the descending colon during pregnancy

Diagnostic, Management, and Neonatal Outcomes of Colorectal Cancer during Pregnancy: Two Case Reports, Systematic Review of Literature and Metanalysis

OBJECTIVE

Colorectal cancer (CRC) during pregnancy is a rare occurrence, with a reported incidence of 0.8 cases per 100,000 pregnancies. Managing CRC during pregnancy poses substantial challenges for clinicians: the diagnosis is often complicated and delayed due to symptom overlap with pregnancy-related manifestations, and medical imaging is constrained by safety concerns for the foetus.

METHODS

This article presents two cases of advanced CRC diagnosed and managed during pregnancy. Additionally, we conducted a systematic review of the literature to assess diagnostic and prognostic factors involved in CRC in pregnant individuals. The systematic review, with pre-registration and approval through Prospero, involved an extensive search of medical databases (Pubmed, Web of Science, Scopus and Scholar) and statistical analysis using t-test for continuous variables and chi square for dichotomous variables.

RESULTS

A total of 1058 studies were identified. After applying exclusion criteria, sixty-six studies were included. Women whose initial symptoms were severe abdominal pain not responsive to common medical treatments and constipation (acute abdomen) had a mean gestational age at delivery lower than those who presented with paucisymptomatic onset. In our study groups, women who underwent chemotherapy during pregnancy had a higher mean gestational age at delivery and did not experience worse neonatal outcomes compared to those who did not undergo chemotherapy.

CONCLUSIONS

CRC during pregnancy poses unique diagnostic and therapeutic challenges. Collaborative efforts among various medical disciplines are essential to manage CRC during pregnancy.

Oncological outcome of peripartum colorectal carcinoma-a single-center experience

OBJECTIVES

This study aimed to analyze disease presentation, management, and oncological outcomes of patients diagnosed with peripartum colorectal cancer (CRC).

METHODS

Retrospective cohort study of all consecutive women of childbearing age (18-45 years) between 2002 and 2014 diagnosed with CRC adenocarcinoma at a tertiary academic institution. Patients who experienced pregnancy within 12 months of their diagnosis (peripartum period, group 1) were compared to the remaining patients of the cohort (group 2). Overall survival (OS) was compared between the two groups through Kaplan-Meier estimates.

RESULTS

Out of 555 consecutive women with a mean age of 37.8 + 6 years, 31 (5.6%) were diagnosed with CRC in the peripartum period. Of these, all patients were symptomatic during pregnancy due to bleeding, abdominal pain, or constipation; however, only 11 CRC (35.5%) were diagnosed during pregnancy, 1 (3.2%) during C section, and the remaining (61.3%) postpartum. TNM stage at presentation was I in 6 patients (19.4%), II in 4 patients (13.9%), III in 8 patients (25.8%), and IV in 13 patients (41.9%). Surgical resection was performed in 23 patients (74.2%): 2 while pregnant, 2 at the time of C section, and the remainder postpartum. Across all stages, OS was 95% at 1 year and 62% at 5 years and did not differ between the two comparative groups (p = 0.16).

CONCLUSIONS

A suspicious attitude towards cancer-related symptoms during pregnancy is crucial to prevent delayed evaluation for CRC.

Colorectal cancer diagnosed during pregnancy: systematic review and treatment pathways

The aim of this study was to identify the mode of presentation and incidence of colorectal cancer in pregnancy (CRC-p), assess the outcomes of the mother and foetus according to gestational age, treatment delivered and cancer features and location. A systematic review of the literature was carried out to identify studies reporting on CRC-p and pooled analysis of the reported data. Seventy-nine papers reporting on 119 patients with unequivocal CRC-p were included. The calculated pooled risk is 0.002% and age at diagnosis has decreased over time. The median age at diagnosis was 32 (range, 17-46) years. Twelve per cent, 41 and 47% of CRC-p were diagnosed during the first, second and third trimester. The CRC-p site was the colon in 53.4% of cases, the rectum in 44% and multiple sites in 2.6%. Bleeding occurred in 47% of patients, abdominal pain in 37.6%, constipation in 14.1%, obstruction in 9.4% and perforation in 2.4%. Out of 82 patients whose treatment was described, 9.8% received chemotherapy during pregnancy. None of their newborns developed permanent disability, one developed hypothyroidism and 72% of newborns were alive. Vaginal delivery was possible in 60% of cases. Anterior resection was performed in 30% of patients and abdominoperineal excision of the rectum in 14.9%. Five patients had either synchronous (60%) or metachronous liver resection (40%). The median survival in these patients was 42 (0-120) months. Fifty-five per cent of patients were alive at the last available follow-up. The median survival of the mother was 36 (0-360) months. Patients with rectal cancer had longer survival compared with patients with colon cancer (P=0.0072). CRC-p is rare, leading to symptoms being overlooked, and diagnosis made at advanced stages. Cases described in the literature include patients who had cancer before pregnancy or developed it after delivery. Survival has not increased over time and the management of these patients requires collaboration between specialties and active interaction with the patients.

The Treatment of Colorectal Cancer During Pregnancy: Cytotoxic Chemotherapy and Targeted Therapy Challenges

: Cancer diagnosed during pregnancy has increased because of delayed child-bearing and the known occurrence of age-dependent malignancies. Cases of colorectal cancer (CRC) in pregnancy have recently been reported. With the expected rise in CRC diagnosed in young adults coupled with the current trend of delayed child-bearing, CRC during pregnancy is likely to increase. Treating pregnant women with CRC by using antineoplastics presents a dilemma because there are many unknowns to guide treatment decisions. We review the issues regarding the use of 10 CRC-approved agents in pregnancy.

IMPLICATIONS FOR PRACTICE

Colorectal cancer (CRC) in pregnancy is likely to become more common because of the current population trend in delayed child-bearing and the increase in CRC incidence expected among young adults. Practitioners should become familiar with the challenges associated with systemic treatment of a pregnant patient with CRC. This review addresses concerns surrounding the 10 systemic agents approved for CRC to help provide treatment guidance when such a case arises.

Malignancies in pregnancy

Malignancy complicating pregnancy is fortunately rare, affecting one in 1000 to one in 1500 pregnancies. Optimal treatment involves balancing the benefit of treatment for the mother while minimizing harm to the fetus. This balance is dependent on the extent of the disease, the recommended course of treatment, and the gestational age at which treatment is considered. Both surgery and chemotherapy are generally safe in pregnancy, whereas radiation therapy is relatively contraindicated. Iatrogenic prematurity is the most common pregnancy complication, as infants are often delivered for maternal benefit. In general, however, survival does not differ from the nonpregnant population. These patients require a multidisciplinary approach for management with providers having experience in caring for these complex patients. The aim of this review was to provide an overview for obstetricians of the diagnosis and management of malignancy in pregnancy.

Obstructing adenocarcinoma of the descending colon in a 31-year-old pregnant woman

INTRODUCTION

Colon cancer in pregnant women is rare and tends to produce unspecific symptoms until advanced stage. Therefore common manifestations during pregnancy must be properly evaluated to avoid delayed diagnosis.

PRESENTATION OF CASE

A 31-year-old pregnant woman presented with nausea, vomiting and obstipation. An obtained magnetic resonance imaging (MRI) showed distended colon and the consecutive colonoscopy with biopsies confirmed the diagnosis of stenosing carcinoma of the descending colon. Left sided hemicolectomy was performed 10 days after initial presentation. Tumor histology confirmed the diagnosis of adenocarcinoma of the descendo-sigmoidal junction. Adjuvant chemotherapy with 5-fluorouracil was started in the 29th gestational week. The patient had an uneventful delivery of a healthy baby in her 39th gestational week.

DISCUSSION

Colorectal carcinoma during pregnancy is a rare event and its diagnosis is often delayed because symptoms are unspecific until the disease is advanced. Although constipation in pregnancy is a common symptom differential diagnosis of a mechanical stenosis should always be contemplated, especially when conservative treatment of constipation fails. MRI is the imaging tool of choice as abdominal computed tomography (CT) is contraindicated in pregnancy. Endoscopic confirmation should be obtained to gain pathological diagnosis of colorectal carcinoma. Surgery is the gold standard of treatment. In relation to the stage of the disease chemotherapy is of great importance.

CONCLUSION

Obstructing colorectal cancer can be a rare reason for the common problem of constipation in pregnancy. Beside clinical examination, MRI scan and colonoscopy will reveal the tumor in most cases and should be followed by surgical treatment and chemotherapy according to the stage of disease.

A Case of Colorectal Cancer during Pregnancy: A Brief Review of the Literature

The incidence of colorectal cancer (CRC) during pregnancy is so rare. Herein we present a case of colorectal cancer that was missed by pregnancy all over the pregnancy period. The patient was a 37-year-old woman (gravid 4, para 2) referred with the complaints of vaginal discharge and suspicious rupture of membrane (ROM). The patient was pale and the initial physical examination revealed dilation of two fingers, effacement about 30%. She underwent emergent cesarean section which showed adhesions surrounding the uterus, the bladder, and the abdominal wall. Forty days postoperatively, the patient presented with abdominal pain in the left upper quadrant (LUQ). Imaging confirmed a mass in LUQ. Partial colectomy of transverse colon (20 cm) was performed. Postoperative histopathologic study revealed a 7 ∗ 6 ∗ 5 cm mass in transverse colon compatible to stage IIa of the Duck class (T3, N0, Mx). Adjuvant chemotherapy was applied and the patient showed improvements during 7 months followup after surgery. Colorectal cancer in pregnancy is associated with diagnostic and therapeutic challenges which mostly lead to late diagnosis in advanced stages and poor prognosis. A targeted program to improve the general population knowledge and the establishment of a national consultant and screening program particularly for women with a planned pregnancy in the high risk group might be beneficial.

Gastrointestinal Conditions during Pregnancy

Pregnancy causes anatomic and physiologic changes in the gastrointestinal tract. Pregnant women with intestinal disease such as Crohn disease or ulcerative colitis pose a management challenge in clinical diagnosis, radiologic evaluation, and treatment secondary to potential risk to the fetus. Heightened physician awareness on possible etiologies such as appendicitis, diverticulitis, and rarely colorectal cancer is required for rapid diagnosis and treatment to improve maternal/fetal outcome. A multidisciplinary approach to evaluation is a necessity because radiologic procedures and treatment medications commonly used in nonpregnant patients may have a potential harmful effect on the fetus. The authors review several gastrointestinal conditions encountered during pregnancy and address presentation, diagnosis, and treatment of each condition.