Bendamustine Hydrochloride, Rituximab, Etoposide, and Carboplatin in Treating Patients With Relapsed or Refractory Diffuse Large B-cell Lymphoma or Hodgkin Lymphoma

Inclusion Criteria: * Patients must have relapsed or primary refractory lymphomas: diffuse large B cell lymphoma (DLBCL) or Hodgkin's lymphoma (HL); patients with other lymphoid malignancies such as T- cell, or lymphomas that are not curable with anthracycline based therapy (e.g. mantle cell lymphoma \[MCL\], follicular lymphoma \[FL\], marginal zone lymphoma \[MZL\], lymphoplasmacytic lymphoma \[LPL\]) are eligible with protocol Chair review and approval; Note: as of 11/1/12 only patients with typical DLBCL and HL are eligible for enrollment; unusual pathology for DLBCL and HL will require Study Chair approval; the goal is to have 20 patients with DLBCL and 20 patients with HL enrolled * World Health Organization (WHO) classification of patient's malignancies must be provided * Patients must have measurable disease defined as lesions that can be accurately measured in two dimensions by computed tomography (CT), magnetic resonance imaging (MRI), medical photograph (skin or oral lesion), plain x-ray, or other conventional technique and a greatest transverse diameter of 1 cm or greater; or palpable lesions with both diameters \>= 2 cm; Note: CT scans remain the standard for evaluation of nodal disease * Patients must have a CT of chest, abdomen, and pelvis within 28 days of enrollment; patients with evidence of lymphadenopathy in the neck must have a CT of neck * Patients should not have evidence of active central nervous system lymphoma * Patients must have an Eastern Coopera…